Each of the four divisions of a year: spring, summer, autumn (fall) and winter

A part of a year when something particular happens

“mating season”

That which gives relish; seasoning.

To make fit for any use by time or habit; to habituate; to accustom; to inure.

“to season oneself to a climate”

(by extension) To prepare by drying or hardening, or removal of natural juices.

“The timber needs to be seasoned.”

To become mature; to grow fit for use; to become adapted to a climate.