The New International Encyclopædia/Funny Bone

FUNNY BONE. A term used to designate really not a bone, but the ulnar nerve, which is so slightly protected in the groove where it passes behind the internal condyle of the humerus (q.v.) that it is often affected by blows on that part. (See Arm; Brachial Artery.) A peculiar electric thrill passes along the arm to the fingers whenever the nerve is struck or pressed.