堀
ほり · hori · JLPT N3 · noun
moat
🏯💧 hori sounds like holey: a moat is a long hole dug around a castle
The kanji is 土 (earth) + 屈 (bend, stoop): bending over to dig into the earth. It shows up in place names like Horikawa (堀川, canal river), and 堀 is also a common surname.