堀 - ditch, moat, canal

canal

moat; fosse

inner moat; moat within the castle walls

outer moat (of a castle)

fish pond (artificially stocked); fishing pond

canal

digging deeply (below the surface); mining deep

to dig up messily

irrigation ditch

canal; waterway; ditch

ascending trench or pathway cut into a naturally-occurring slope

moat; horizontal trench