/ Dictionary / Index B biceps: Meaning and Definition of Find definitions for: bi•ceps Pronunciation: (bī'seps), [key] — pl. -ceps•es -ceps. either of two flexor muscles, onelocated in the front of the upper arm and assisting in bending the arm, and the otherlocated on the back of the thigh and assisting in bending the leg. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: biceps (Thesaurus) bicephalous biceps brachii Related Content Daily Word Quiz: meritocracy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language