Moat

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(trench, defensive ditch round a castle, etc) រណ្ដៅ, រណ្ដៅសមុទ្រ, រណ្ដៅកប់ខ្មោច, ស្នាមភ្លោះ (ជីកនៅជុំវិញបន្ទាយជំនាន់ដើម)

1.

A deep trench around the rampart of a castle or other fortified place, sometimes filled with water; a ditch.

1.

(TRANSITIVE) To surround with a moat.