堀 - ditch, moat, canal

moat; fosse

canal

canal

inner moat; moat within the castle walls

fish pond (artificially stocked); fishing pond

outer moat (of a castle)

ascending trench or pathway cut into a naturally-occurring slope

irrigation ditch

kobori; swimming while wearing armor

moat; horizontal trench

digging deeply (below the surface); mining deep

to remove obstacles in the way of one's objective; to take an indirect approach; to fill in the outer moat