n.

a thin sliver of wood

"he lit the fire with a burning splint"

an orthopedic mechanical device used to immobilize and protect a part of the body (as a broken leg)

Oral splints: the crutches for temporomandibular disorders and bruxism?
Microsurgical tubal reanastomosis--the role of splints
Short-term effects of dynamic lycra splints on upper limb in hemiplegic patients.
The efficacy of oral splints in the treatment of myofascial pain of the jaw muscles: a controlled clinical trial
Sequence-dependent hydrolysis of RNA using modified oligonucleotide splints and RNase H
Sequence-dependent hydrolysis of RNA using modified oligonucleotide splints and RNase H.
Clinical use of long-term indwelling silicone rubber ureteral splints inserted cystoscopically.
Mandibular advancement splints and continuous positive airway pressure in patients with obstructive sleep apnoea: a randomized cross...
Overuse injuries: tendinopathies, stress fractures, compartment syndrome, and shin splints
Overuse injuries: tendinopathies, stress fractures, compartment syndrome, and shin splints. Clin Sports Med 23(1):55-81, vi