noun
or foss ˈfäs, ˈfȯs
( plural fosses )
Etymology: Middle English fosse, from Old French, from Latin fossa
1. : canal , ditch , trench : as
a. : a ditch serving as a barrier against an enemy — see castle illustration
b. : a moat surrounding a castle
c. : a depression between a glacier and a moraine
2. archaic : a hole dug in the ground : pit
3. : fossa