what is the name of the muscle  the term biceps
biceps - any skeletal muscle having two origins (but especially the muscle that flexes the forearm) 1  skeletal muscle, striated muscle - a muscle that is connected at either or both ends to a bone and so move parts of the skeleton; a muscle that is characterized by transverse stripes. femoral biceps, musculus biceps femoris - the biceps muscle of the thigh; it flexes the knee and rotates the leg laterally.