(anatomy) Any muscle having two heads. / Specifically, the biceps brachii, the flexor of the elbow. / (informal) The upper arm, especially the collective muscles of the upper arm.

(sometimes proscribed) A biceps.

Having a certain type, or form of biceps

(anatomy) The flexor in the upper arm.

plural of biceps brachii

plural of biceps femoris

(anatomy) The flexor of the knee, a two-headed muscle in the back of the upper leg.

(bodybuilding) A standard pose in which both sets of biceps are flexed and the chest is thrust forward.

(bodybuilding) A standard pose in which both sets of biceps and the abdominals are flexed, while one is facing the judges.

(bodybuilding) A standard pose in which both sets of biceps and back muscles are flexed, with one's back turned toward the judges.