井の中の蛙大海を知らず[inonakanokawazutaikaiwoshirazu] parochial
井桁[igeta] well lining
井戸[ido] water well
井戸屋形[idoyakata] well roof
井戸掘り[idohori] well digging

井戸綱[idozuna] well rope
井戸車[idoguruma] well pulley
井戸水[idomizu] well water
井戸側[idogawa] well curb
井戸替え[idogae] well cleaning

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