crampons

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. [ 1913 Webster ]

2. Iron instruments with sharp points, worn on the shoes to assist in gaining or keeping a foothold. [ 1913 Webster ]