- Arm muscle - Muscle - A muscle having three heads; specif., the great extensor
of the forearm, arising by three heads and inserted into the olecranon
at the elbow.
- Having two heads or origins, as a muscle. - Pertaining to a biceps muscle; as, bicipital furrows,
the depressions on either side of the biceps of the arm. - Dividing into two parts at one extremity; having two
heads or two supports; as, a bicipital tree.