The Collaborative International Dictionary of English v.0.48:

Splint \Splint\, v. t. [imp. & p. p. Splinted; p. pr. & vb. n.
   Splinting.]
   To split into splints, or thin, slender pieces; to splinter;
   to shiver. [Obs. or R.] --Florio.
   [1913 Webster]

   2. To fasten or confine with splints, as a broken limb. See
      Splint, n., 2. [R.] --Shak.
      [1913 Webster]