Breadcrumb Home > Dictionary > Index R Cite rictus: Meaning and Definition of Find definitions for: ric•tus Pronunciation: (rik'tus), [key] — pl. -tus, -tus•es. the gape of the mouth of a bird. the gaping or opening of the mouth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: rictus (Thesaurus) rictal bristle rid TrendingHere are the facts and trivia that people are buzzing about. January 2021 Current Events: US News The Holocaust (1933–1945) Chinese New Year History, Meaning, and Celebrations Noble Titles and Ranks in a Monarchy The 5 Best Air Purifiers of 2020 Inaugural Trivia Related Content Daily Word Quiz: subrosa Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language