開鑿[kaisaku] excavation
円鑿[marunomi] (a) gouge
鑿井[sakusei] well drilling
鑿岩機[sakuganki] rock drill
掘鑿[kussaku] digging out

穿鑿[sensaku] scrutiny
斧鑿[fusaku] lucubration
平鑿[hiranomi] flat chisel
鎬鑿[shinoginomi] chisel for making dovetail joints