n.
1.a period of time containing 365 (or 366) days
2.a period of time occupying a regular part of a calendar year that is used for some particular activity
3.the period of time that it takes for a planet (as, e.g., Earth or Mars) to make a complete revolution around the sun
4.a body of students who graduate together
Idiom of the Day
search high and low for (someone or something)
to look carefully everywhere for someone or something
I have been searching high and low for my address book.