definition
A mechanical device intended to make a task easier.
example
Hand me that tool, would you? I don't have the right tools to start fiddling around with the engine.
definition
Equipment used in a profession, e.g., tools of the trade.
example
These are the tools of the trade.
definition
Something to perform an operation; an instrument; a means.
definition
A piece of software used to develop software or hardware, or to perform low-level operations.
example
The software engineer had been developing lots of EDA tools. a tool for recovering deleted files from a disk
definition
A person or group which is used or controlled, usually unwittingly, by another person or group.
example
He was a tool, no more than a pawn to her.
definition
Penis.
definition
(by extension) An obnoxious or uptight person.
example
He won't sell us tickets because it's 3:01, and they went off sale at 3. That guy's such a tool.