/ Dictionary / Index O opinicus: Meaning and Definition of Find definitions for: o•pin•i•cus Pronunciation: (ō-pin'i-kus), [key] — pl. -cus•es. a heraldic monster having the head, neck, and wings of an eagle, the body of a lion, and the tail of a bear. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. opine opinion Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language