/ Dictionary / Index C cullis: Meaning and Definition of Find definitions for: cul•lis Pronunciation: (kul'is), [key] — n. a gutter, as at the eaves of a roof. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cullis (Thesaurus) cullion Cullman Related Content Daily Word Quiz: jaundice Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language