Definition of “year” - Learner’s Dictionary

year

noun [ C ] us uk /jɪər/
Extra Examples
There were over 400 homicides in Chicago last year.Who won the league championship this year?He's been working in France for two years now.The group forged friendships that have lasted more than twenty years.The palace took 15 years to complete.
PERIOD OF TIME

A1 a period of 12 months, or 365 or 366 days, especially from 1 January to 31 December:

last year/next year
He joined the company a year ago.
the academic/financial, etc year

A2 the period of a year that is used by universities/businesses, etc to organize their activities

be two/twelve/37, etc years old

A1 to be a particular age:

Her son is six years old.
a two-/twelve-/37-, etc year-old

someone who is a particular age

STUDENTS UK

a group of students who start college or a course together:

He was in my year at school.
years

B1 a long time:

I haven't seen Linda for years.
→ See also for donkey's years , leap year , new year

(Definition of “year” from the Cambridge Learner's Dictionary © Cambridge University Press)