枘鑿 [－凿]

Jyutping jeoi6 zok6
Pinyin ruì záo

Definitions (CC-CEDICT)
  1. incompatible (abbr. for 方枘圓鑿|方枘圆凿[fang1 rui4 yuan2 zao2])
  2. (literary) compatible (lit. "mortise and tenon")