bondstone

Etymology

From bond + stone.

bondstone means A stone for bonding masonry to a similar backing; a stone that reaches a considerable distance into, or entirely through a wall, for the purpose of binding it together. Lexicurio rates it Sui generis — a strength score of 87 out of 100.

noun

A stone for bonding masonry to a similar backing; a stone that reaches a considerable distance into, or entirely through a wall, for the purpose of binding it together.