/ Dictionary / Index R rooster: Meaning and Definition of Find definitions for: roost•er Pronunciation: (r'stur), [key] — n. the male of domestic fowl and certain game birds; cock. a representation of this bird, used as an emblem of the Democratic party from 1842 to 1874. a cocky person. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: rooster (Thesaurus) roost roosterfish Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language