Source : Webster's Revised Unabridged Dictionary (1913)

Crampoons \Cram*poons"\ (kr[a^]m*p[=oo]nz"), n. pl. [F. crampon,
   fr. OHG. chramph crooked; akin to G. krampf cramp. See
   {Cramp},n., and cf. {Crampon}.]
   1. A clutch formed of hooked pieces of iron, like double
      calipers, for raising stones, lumber, blocks of ice, etc.

   2. Iron instruments with sharp points, worn on the shoes to
      assist in gaining or keeping a foothold.