Real Dictionary

splint
countable noun: A splint is a long piece of wood or metal that is fastened to a broken arm, leg, or back to keep it still.

splint in American English
a thin strip of wood or cane woven together with others to make baskets, chair seats, etc.
to fit, support, or hold in place with or as with a splint or splints
noun: a thin piece of wood or other rigid material used to immobilize a fractured or dislocated bone, or to maintain any part of the body in a fixed position
transitive verb: to secure, hold in position, or support by means of a splint or splints, as a fractured bone

splint in British English
noun: a rigid support for restricting movement of an injured part, esp a broken bone