year, twelvemonth, yr -- (a period of time containing 365 (or 366) days; "she is 4 years old"; "in the year 1920")
year -- (a period of time occupying a regular part of a calendar year that is used for some particular activity; "a school year")
year -- (the period of time that it takes for a planet (as, e.g., Earth or Mars) to make a complete revolution around the sun; "a Martian year takes 687 of our days")
class, year -- (a body of students who graduate together; "the class of '97"; "she was in my year at Hoehandle High")
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