/ Dictionary / Index U unguis: Meaning and Definition of Find definitions for: un•guis Pronunciation: (ung'gwis), [key] — pl. -gues a nail, claw, or hoof. the clawlike base of certain petals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unguis (Thesaurus) unguinous ungula Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language