moat
noun/məʊt/
/məʊt/
- a deep wide channel that was dug around a castle, etc. and filled with water to make it more difficult for enemies to attack
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护城河 - The castle was ringed by a moat spanned by a wooden drawbridge.
城堡四周环绕着一条架有木吊桥的护城河。
Word Originlate Middle English: from Old French mote ‘mound’. - The castle was ringed by a moat spanned by a wooden drawbridge.