summer-n; 3 Senses

Sense Number 1: portion of an astronomical year, with days longer than nights

Commentary: SUMMER[+time][+period][+year][+portion][+warm]

It was a long hot summer.
This lily blooms in late summer.
Johnny will go to summer school this year.
They spend their summers on Cape Cod.

WordNet 3.0 Sense Numbers: 1

Sense Number 2: a zenith of maturing powers

Commentary: SUMMER[+state][+maturity][+emerging]
NOTE: is a figurative use of sense 1

The dissident had spent the summer of his life in prison.
They were rosy-cheeked lads, in the summer of their youth.

WordNet 0.0 Sense Numbers: 4

Sense Number 3: synonym for a year

Commentary: SUMMER[+time][+period][+year]
NOTE: used as a count of years.

She was a girl of seventeen summers when he met her.
Fifty summers ago today the dam broke and flooded our town.

WordNet 0.0 Sense Numbers: 3