It was originally Latin, 'mota', meaning a mound. We have the term 'mott and bailey' castle from this, the mott is the fortified mound. During Normal times, the meaning shifted from the mound itself, to the defensive ditch dug around it - and later, water-filled versions.
A dry or water filled ditch around a castle is called a moat. The water in the moat is supplied by a nearby river. The word moat should not be confused with the French term motte which described a mound or hillock upon which a fortification was constructed. Please see related links.
Advantage of a water moat
No. Once the Moat has gone, it's gone. Soz. No. Once the Moat has gone, it's gone. Soz.
The water surrounding a castle is called a moat however most castles did not have a moat.
a castle everyone
The word that is a homophone for both "speck" and "moat" is "mote."
some animals use a moat
A 'moat'
A homonym for the trench around a castle could be "moat."
moat
moat.
The water-filled trench around a castle is called a moat.
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.
I think that the 'trench' you are thinking of is a moat. You could say that it is a trench full of water that surrounds the castle. If you are not thinking of a moat then I am sorry.
mope meet meat moat
A moat surrounded the castle.The moat was a form of defence for castles.
It could be either, because it is defined by the word it modifies. It is more likely an adjective phrase. E.g. A castle with a moat is harder to attack. It appears to be an adverb in the form: "The castle was originally built with a moat" although it seems to say that the castle was built 'using' a moat rather than featuring one.