vachette

Noun

 * 1)  A piece of strong steel wire with the ends curved and pointed, used on toe or quarter cracks to bind the edges together and prevent motion. It is clasped into two notches, one on each side of the crack, burned into the wall with a cautery iron.

Etymology
From.

Noun

 * 1) young cow, calf
 * 2) calfskin
 * 3)  type of dice game