Yes, season is a Scrabble word!

Verb

1. Lend flavor to

2. Make fit

3. Make more temperate, acceptable, or suitable by adding something else; moderate

Noun

1. A period of the year marked by special events or activities in some field

2. One of the natural periods into which the year is divided by the equinoxes and solstices or atmospheric conditions

3. A recurrent time marked by major holidays