/ Dictionary / Index C closed season: Meaning and Definition of Find definitions for: closed' sea'son Pronunciation: [key] a period, usually for a specific part of the year, during which angling or hunting for a given species is legally prohibited: closed season on ducks. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. closed rule closed set Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language