fossa

fossa ae, f

fossus, a ditch, trench, fosse : fodere fossam, L.: ut aditus fossā cingeretur: vallo atque fossā moenia circumdat, S.: vallo fossāque munire, Cs.: cingebant oppida fossae, O.: fossas inplere, V.: institutae fossae, Cs.: cruor in fossam confusus, H.— A river-bed, water-course : Rheni.— A gutter, water-way , V.— A furrow (to mark foundations): designat moenia fossā, V.