榫凿 sǔnzáo mortise chisel Origin Definitions Defs Strokes Stroke Words Sentences Sents 榫 sǔn tenon (bound form) the projecting part of a joint that fits into a mortise凿 鑿 záo noun chisel a metal tool with a sharp blade for carving or cutting; a chisel (now usually referred to as 凿子 záozi)