Rampart has 3 different meanings across 1 category:
Noun
an embankment built around a space for defensive purposes
"they stormed the ramparts of the city"
"they blew the trumpet and the walls came tumbling down"
A defensive mound of earth or a wall with a broad top and usually a stone parapet; a wall-like ridge of earth, stones or debris; an embankment for defensive purpose.
To defend with a rampart; fortify or surround with a rampart.