carpal tunnel

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A passageway in the wrist through which nerves and the long tendons of the flexor muscles of the wrist and fingers pass.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun anatomy A fibro-osseous passageway on the palmar side of the wrist that connects the distal forearm to the middle compartment of the deep plane of the palm.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a passageway in the wrist through which nerves and the flexor muscles of the hands pass