ram·part 
(rămpärt′, -pərt)
(rămpärt′, -pərt)n.
1. A fortification consisting of an embankment, often with a parapet built on top.
2. A means of protection or defense; a bulwark. See Synonyms at bulwark.
tr.v. ram·part·ed, ram·part·ing, ram·parts
To fortify or surround with a rampart.
[French rempart, from Old French, from remparer, to fortify : re-, re- + emparer, to fortify, take possession of (from Old Provençal amparar, from Vulgar Latin *ante parāre, to prepare : Latin ante-, ante- + Latin parāre, to prepare; see perə-1 in the Appendix of Indo-European roots).]