Webster's Revised Unabridged Dictionary · 1913

Rampart

Rampart (ram"part) , noun

[French rempart, Old French rempar, from remparer to fortify, se remparer to fence or intrench one's self; pref. re- re- + pref. en- (Latin in) + parer to defend, parry, prepare, Latin parare to prepare. See Pare.]

1.
That which fortifies and defends from assault; that which secures safety; a defense or bulwark.
2.
(Fortification) A broad embankment of earth round a place, upon which the parapet is raised. It forms the substratum of every permanent fortification. — Mahan

Rampart , transitive verb

To surround or protect with, or as with, a rampart or ramparts.
Those grassy hills, those glittering dells, Proudly ramparted with rocks. — Coleridge
Collocations (1)
Rampart gun (Fortification) , a cannon or large gun for use on a rampart and not as a fieldpiece.