IPA: /fɒs/
KK: /fɔs/
A long, narrow hole dug in the ground, often used for drainage or as a defensive barrier.
The soldiers dug a fosse around the camp for protection.
Fosse comes from Old French *fosse*, meaning a ditch or trench. The word refers to a deep, narrow excavation in the ground, typically used for defense or drainage.
Picture a deep ditch or trench, as 'fosse' directly refers to this type of excavation.