braie

a low defensive wall, particularly of a castle; a rampart; trousers, namely a baggy type of trouser or breeches worn by many ancient peoples and tribes, most notably the Gauls; also worn later by crusaders and Templar knights

Ultimately from Latin brāca (“breeches”), itself from Transalpine Gaulish *brāca, from Proto-Germanic *brāks, *brōks (“breeches, pants”).