Crossword Genius

Defensive trenches (5)

Ross

I believe the answer is:

moats

'defensive trenches' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for moats that I've seen before include "Ditches around castles" , "Water defences" , "Fortifications filled with water" , "Water-filled ditches as fortifications" , "Castle ditches" .)

I've seen this clue in the L.A. Times Daily, The Washington Post, the LA Times and the Sydney Morning Herald.
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