Learner's definition of YEAR
1 : a unit of time that is equal to 12 months or 365 or sometimes 366 days
I haven't seen her in a year.
He quit smoking six years ago.
The job pays $45,000 a/per year.
She renews her lease every year.
We see them once or twice a year.
It feels like we've been standing in line for a year.
That team hasn't won in years.
It's been years since I've been on an airplane.
The camp has changed a lot over the years. [=during several/some/many years]
The tree grows taller year by year. = The tree grows taller each year. = The tree grows taller as the years go by.
The park is open all year round. = The park is open the entire year.
2 : the regular period of 12 months that begins in January and ends in December
The work should be done by the end of the year.
She was born in the year 1967.
The volcano erupted in the year 44 B.C.
In what year was the car made?
They got married last year. [=during the year before this one]
He will retire next year. [=during the year after this one]
the movie/teacher/rookie of the year [=the best movie/teacher/rookie in a specific year]
3 — used to refer to the age of a person
She is 14 years old.
the teenage years [=the ages 13 through 19]
a six-year-old boy
He is getting on in years. [=he is getting old]
She looks young/old for her years. [=she looks younger/older than she is]
4 : a period of time when a particular event, process, activity, etc., happens or is done
The school year runs from September to June. [=the school operates from September to June]
The fiscal year begins in October and ends in September.
This will be a great year [=harvest season] for peaches.
The pitcher is having his best year [=season] ever.
She took geometry (during) her sophomore year.
first- and second-year students
in the year of our Lordformal
— used before a year to say that it is after the birth of Jesus Christ
never/not in a thousand/million/billion yearsinformal
— used as a strong way of saying that something is extremely unlikely or impossible
put years on
: to cause (someone) to look or feel older
since (the) year one(US)informalor Britishsince the year dot
: for a very long time: since a time in the distant past
take years off
: to cause someone to look or feel younger