The Collaborative International Dictionary of English v.0.48:

Spale \Spale\, n. [Cf. Spell a splinter.]
   1. A lath; a shaving or chip, as of wood or stone. [Prov.
      Eng. & Scot.]
      [1913 Webster]

   2. (Shipbuilding) A strengthening cross timber.
      [1913 Webster]