a. [ Pref. bi- + cephalous: cf. F. bicéphale. ] Having two heads. [ 1913 Webster ]
‖n. [ L., two-headed; bis twice + caput head. See Capital. ] (Anat.) A muscle having two heads or origins; -- applied particularly to a flexor in the arm, and to another in the thigh. [ 1913 Webster ]
n. (Zool.) A genus comprising the pilot whales.