moat.
She probably meant moats, as in, a body of water surrounding a castle or dungeon.
iT'S THE LETTER T
Rook.
atmosphere
There appears to be a word left out of the question. Assuming this word is "water" ("What is the name given to a body of land with water surrounding it?"), the answer is "island".
A 'moat'
air
wordart
Wash is a four letter word meaning "to clean with water".
Wash is a four letter word meaning "to clean with water".
Castle is caisleán.
Another word for a deep ditch that is dug around a castle is a moat. You could call it a trench, or you could fill it full of water and call it a moat.