"of the wrist," 1743, from Modern Latin carpalis, from carpus "wrist" (see carpus). Carpal tunnel syndrome attested by 1970, from carpal tunnel, the tunnel-like passage that carries nerves through the wrist.
carpal car·pal (kär'pəl)
Of, relating to, or near the carpus. n.
Any of the bones of the carpus, including the scaphoid, lunate, triquetrum, pisiform, trapezium, trapezoid, capitate, and hamate bones.