The definition of a barrier is anything, either natural or manmade, that keeps something from passing through.
A ditch or moat, esp. one used in fortifications
An artificial waterway or artificially improved river used for travel, shipping, or irrigation.
The definition of a ditch is a long narrow trench or hole dug into the ground.
The definition of a channel is a waterway, a means of communication and a specific television or radio frequency.
A long, narrow ditch dug by soldiers for cover and concealment, with the removed earth heaped up in front
A rut, groove, or narrow depression:
Find another word for moat. In this page you can discover 18 synonyms, antonyms, idiomatic expressions, and related words for moat, like: barrier, fosse, canal, manor-house, castle, ditch, channel, trench, furrow, graffe and gatehouse.