splint

plural splints

1. A narrow strip of wood split or peeled from a larger piece.
   1. West MidlandsCheshireA splinter caught in the skin.
2. dentistryA dental device applied consequent to undergoing orthodontia.
3. medicineA device to immobilize a body part.

   [...] I saw in the white men's ward that little chap tossing on his back, with his arm in splints, and quite light-headed.

   1899 September – 1900 July, Joseph Conrad, chapter V, in Lord Jim: A Tale, Edinburgh; London: William Blackwood and Sons, published 1900, →OCLC, pages 50–51

4. historicalgovernmentA segment of armour consisting of a narrow overlapping plate.

   1 more example

   The fore-part of his thighs, where the folds of his mantle permitted them to be seen, were also covered with linked mail; the knees and feet were defended by splints, or thin plates of steel, ingeniously jointed upon each other; and mail hose, reaching from the ancle to the knee, effectually protected the legs, and completed the rider's defensive armour.

   1819 December 20 (indicated as 1820), Walter Scott, chapter II, in Ivanhoe; a Romance. […], volume I, Edinburgh: […] Archibald Constable and Co.; London: Hurst, Robinson, and Co. […], →OCLC, page 25

5. businessSynonym of splent coal.

   Synonyms: splent coal

6. biologyA bone found on either side of a horse's cannon bone; the second or fourth metacarpal (forelimb) or metatarsal (hindlimb) bone.
7. biologyA disease affecting the splint bones, as a callosity or hard excrescence.

present singular third person splints · participle present splinting · participle past splinted · past splinted

1. transitiveTo apply a splint to; to fasten with splints.
2. To support one's abdomen with hands or a pillow before attempting to cough.
3. To press fingers against the vaginal wall to ease defecation.
4. obsoleteraretransitiveTo split into thin, slender pieces; to splinter.