noun

definition

An object designed to open and close a lock.

definition

An object designed to fit between two other objects (such as a shaft and a wheel) in a mechanism and maintain their relative orientation.

definition

A crucial step or requirement.

example

The key to solving this problem is persistence.

definition

A guide explaining the symbols or terminology of a map or chart; a legend.

example

The key says that A stands for the accounting department.

definition

A guide to the correct answers of a worksheet or test.

example

Some students cheated by using the answer key.

definition

One of several small, usually square buttons on a typewriter or computer keyboard, mostly corresponding to text characters.

example

Press the Escape key.

definition

In musical instruments, one of the valve levers used to select notes, such as a lever opening a hole on a woodwind.

definition

In instruments with a keyboard such as an organ or piano, one of the levers, or especially the exposed front end of it, which are depressed to cause a particular sound or note to be produced.

definition

The lowest note of a scale; keynote.

definition

In musical theory, the total melodic and harmonic relations, which exist between the tones of an ideal scale, major or minor; tonality.

definition

In musical theory and notation, the tonality centering in a given tone, or the several tones taken collectively, of a given scale, major or minor.

definition

In musical notation, a sign at the head of a staff indicating the musical key.

definition

The general pitch or tone of a sentence or utterance.

definition

A modification of an advertisement so as to target a particular group or demographic.

definition

An indehiscent, one-seeded fruit furnished with a wing, such as the fruit of the ash and maple; a samara.

definition

A manual electrical switching device primarily used for the transmission of Morse code.

definition

A piece of information (e.g. a passphrase) used to encode or decode a message or messages.

definition

A password restricting access to an IRC channel.

definition

In a relational database, a field used as an index into another table (not necessarily unique).

definition

A value that uniquely identifies an entry in a container.

definition

The free-throw lane together with the circle surrounding the free-throw line, the free-throw lane having formerly been narrower, giving the area the shape of a skeleton key hole.

example

He shoots from the top of the key.

definition

A series of logically organized groups of discriminating information which aims to allow the user to correctly identify a taxon.

definition

A piece of wood used as a wedge.

definition

The last board of a floor when laid down.

definition

A keystone.

definition

That part of the plastering which is forced through between the laths and holds the rest in place.

definition

A wooden support for a rail on the bullhead rail system.

definition

The degree of roughness, or retention ability of a surface to have applied a liquid such as paint, or glue.

example

The door panel should be sanded down carefully to provide a good key for the new paint.

definition

The thirty-third card of the Lenormand deck.

definition

(print and film) The black ink layer, especially in relation to the three color layers of cyan, magenta, and yellow. See also CMYK.

definition

A color to be masked or made transparent.

verb

definition

To fit (a lock) with a key.

definition

To fit (pieces of a mechanical assembly) with a key to maintain the orientation between them.

definition

To mark or indicate with a symbol indicating membership in a class.

definition

(telegraphy and radio telegraphy) To depress (a telegraph key).

definition

To operate (the transmitter switch of a two-way radio).

definition

(more usually to key in) To enter (information) by typing on a keyboard or keypad.

example

Our instructor told us to key in our user IDs.

definition

To vandalize (a car, etc.) by scratching with an implement such as a key.

example

He keyed the car that had taken his parking spot.

definition

To link (as one might do with a key or legend).

definition

To be identified as a certain taxon when using a key.

definition

To modify (an advertisement) so as to target a particular group or demographic.

definition

To attune to; to set at; to pitch.

definition

To fasten or secure firmly; to fasten or tighten with keys or wedges.

adjective

definition

Indispensable, supremely important.

example

He is the key player on his soccer team.

definition

Important, salient.

example

She makes several key points.

Examples of key in a Sentence

He has a key to the mine gate.

I took the key from the office and made a copy.

Love your Heavenly Father with your whole heart and soul, love every child of God as much as ever you can, and remember that the possibilities of good are greater than the possibilities of evil; and you have the key to Heaven.

I still have a key to it.

On the other hand, when we learn a new word, it is the key to untold treasures....

Betsy left the key to her sumptuous room, in the city's finest hotel, allowing me to drop off my duds before meeting him in the hotel lobby.

She has learned that EVERYTHING HAS A NAME, AND THAT THE MANUAL ALPHABET IS THE KEY TO EVERYTHING SHE WANTS TO KNOW.

He paused with his hand on the ignition key and glanced at her.

He carefully folded his knife and slipped it in his right pocket while withdrawing a padlock and key from his left.

Jonathan begged Alex for the key and ran ahead of them.

I could not be induced to tell where the key was.

But teacher came to me and taught my little fingers to use the beautiful key that has unlocked the door of my dark prison and set my spirit free.

Damian had a lot of cars, and she found the black BMW whose lights flashed when she clicked the key fob.

So let's review my key points to see if they are compelling.

Is there no part of you that desires this woman as a man does, as more than a key to save your people?

The safe required the code from a key fob, which was probably in one of his pockets.

There was no key fob, either.

He slipped the motel key in the left shoe and then rolled each sock, pushing it into its corresponding shoe.

There was no light in the back of the house and I didn't have a flashlight so I had trouble getting the key in the lock.

He handed me the room key.

She went to the key locker and chose one of Damian's sports cars, her instincts urging her to go somewhere, though she didn't know where.

Your part is key, brother.

She moved away from him, searching in her purse for the door key.

It wasn't a weapon; it was a key.

These instruments thus produced, in Haydn's and Beethoven's times, a very remarkable but closely limited series of effects, which, as Sir George Macfarren pointed out in the article "Music" in the 9th edition of the Encyclopaedia Britannica, gave them a peculiar character and function in strongly asserting the main notes of the key.

It is not possible to work double current from one set alone, as in this case, if one key of a group of instruments is up and another is down, the battery would be short-circuited and no current would flow to line.

The celebrated Rosetta Stone which supplied Champollion with the key for the decipherment of the ancient monuments of Egypt was found near Fort St Julien, 4 m.

Nevertheless thirty years later it is described by Leland as the westernmost market town in Cornwall "with no socur for Botes or shippes but a forsed Pere or Key."

Wesley had not yet found the key to the heart and conscience of his hearers.

Gherardo, however, did not say, as has been supposed, that Joachim's books were the new gospel, but merely that the Calabrian abbot had supplied the key to Holy Writ, and that with the help of that intelligentia mystica it would be possible to extract from the Old and New Testaments the eternal meaning, the gospel according to the Spirit, a gospel which would never be written; as for this eternal sense, it had been entrusted to an order set apart, to the Franciscan order announced by Joachim, and in this order the ideal of the third age was realized.

The key to the remaining operations of t811 lies in the importance attached by both Allies and French to the possession of the fortresses which guarded the two great roads from Portugal into Spain - Almeida and Ciudad Rodrigo on the northern, and Badajoz and Elvas on the southern road; all these except Elvas were in French hands.

The city was considered to be the key of Hungary, and its possession was believed to secure possession of Servia, besides giving command of the traffic between the Upper and the Lower Danube.

The current passes through the rocking key K, which, when thrown over to the right, places a in contact with c and b with d, and when thrown over to the left, places a in contact with e and b with f.

The reversing key K having been put over to the left side, the short-circuit key S is suddenly opened; this inserts the resistance R, which has been suitably adjusted before hand, and thus reduces the current and therefore the magnetizing force to a known value.

Just give me your key.

He picked out a motel room key.

The key fob was the old fashioned type with the name of the motel listed on it.

Suddenly, there was a sound at the door—a key being inserted into the lock.

She shrugged one shoulder and turned away, jabbing the key in the door.

She had the key to the building in her purse.

The next morning when the men were getting ready to leave, they dropped the key by and thanked Carmen and Felipa for their help.

Selecting the back door key, she finally tore her attention from the serpent and took a step toward the back of the house.

She fumbled with the key and finally unlocked the door.

It let her amass an army unlike any that had ever existed and showed her the key to victory.

Instead of a key, there was a code to enter the condo located in a ritzy building on a private beach.

Pulling out the letter, she looked at the ten digit key code.

Those big eyes are the key.

It's the key to a great power capable of destroying a world is kept, he said, his hands falling away from her neck.

It was quite another to realize the weapon was him and the gem was merely the key to access it.

She was in danger she couldn't face alone; with the gem, she held the key to destroying the planet.

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