crampoons

from the GNU version of the Collaborative International Dictionary of English.

• noun plural A clutch formed of hooked pieces of iron, like double calipers, for raising stones, lumber, blocks of ice, etc.
• noun plural Iron instruments with sharp points, worn on the shoes to assist in gaining or keeping a foothold.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Plural form of crampoon.