Possible Clues:

• Tasteful narrowing in the middle of a bone
• Funny bone nerve
• How you got fifty and ran back with it, by way of being up in arms
• Relating to one of the bones of the forearm
• ___ nerve (funny bone part)
• Nerve in the arm
• Neurological adjective
• Pertaining to the longer of the forearm bones
• Nerve responsible for the 'funny bone' sensation
• Relating to a particular arm bone