bulwarks

ˈbʊlwək

noun

a defensive wall.

wall,rampart,fortification,parapet,stockade,palisade,barricade,embankment,earthwork,breastwork,berm,vallum,circumvallation

SYNONYMS

barricadebermbreastworkcircumvallationearthworkembankmentfortificationpalisadeparapetrampartstockadevallumwall