definition
A solar year, the time it takes the Earth to complete one revolution of the Sun (between 365.24 and 365.26 days depending on the point of reference).
example
we moved to this town a year ago; I quit smoking exactly one year ago
definition
(by extension) The time it takes for any astronomical object (such as a planet, dwarf planet, small Solar System body, or comet) in direct orbit around a star (such as the Sun) to make one revolution around the star.
example
Mars goes around the sun once in a Martian year, or 1.88 Earth years.
definition
A period between set dates that mark a year, from January 1 to December 31 by the Gregorian calendar, from Tishiri 1 to Elul 29 by the Jewish calendar, and from Muharram 1 to Dhu al-Hijjah 29 or 30 by the Islamic calendar.
example
A normal year has 365 full days, but there are 366 days in a leap year.
definition
A scheduled part of a calendar year spent in a specific activity.
example
During this school year I have to get up at 6:30 to catch the bus.
definition
A Julian year, exactly 365.25 days, represented by "a".
definition
A level or grade in school or college.
example
Every second-year student must select an area of specialization.
definition
The proportion of a creature's lifespan equivalent to one year of an average human lifespan (see also dog year).
example
Geneticists have created baker's yeast that can live to 800 in yeast years.