biceps bi·ceps (bī'sěps')
n. pl. biceps or bi·ceps·es (-sěp'sĭz)
A muscle with two heads or points of origin.
The large muscle at the front of the upper arm that flexes the forearm.
The large muscle at the back of the thigh that flexes the knee joint.
|biceps (bī'sěps') Pronunciation Key
(click for larger image in new window)
Either of two muscles, biceps brachii of the arm or biceps femoris of the leg, each with two points of origin. The biceps of the arm bends the elbow, while the biceps of the leg helps to bend the knee as part of the hamstring.