Dictionary 1. (n.) A ditch or moat.2. (n.) See Fossa. Thesaurus abri approach trench aqueduct bunker canal canalization channel communication trench countermine coupure crimp cut dike ditch double sap dugout entrenchment fire trench flying sap fortified tunnel foxhole gallery goffer gutter ha-ha kennel mine moat parallel pleat sap slit trench sunk fence trench trough tunnel |