also: ざかり
noun, noun, used as a suffix
peak; height; full bloom; in full swing
Describes the most intense or active period of a season, event, or natural phenomenon. Often used as a suffix with the voiced form ざかり.
At the height of summer, this area gets crowded with tourists.
パーティーは盛りを過ぎていた。
The party was past its peak.
noun, noun, used as a suffix
prime of life; best days; bloom of youth
Refers to the peak period of a person's life, career, or vitality. Also used as a suffix with ざかり, e.g. 働きざかり (prime working age).
彼は今が人生の盛りだ。
He is in the prime of his life now.
食べざかりの子供が三人いる。
I have three children who are at their hungriest growing stage.
noun
Specifically for animals in mating season. Not used for humans.
猫の盛りは春と秋に多い。
Cats often come into heat in spring and autumn.