stock·ade 
(stŏ-kād)
(stŏ-kād)n.
1. A defensive barrier made of strong posts or timbers driven upright side by side into the ground.
2.
a. A fenced or enclosed area, especially one used for protection.
b. A jail on a military base.
tr.v. stock·ad·ed, stock·ad·ing, stock·ades
To fortify, protect, or surround with a stockade.
[Obsolete French estacade, estocade, from Spanish estacada, from estaca, stake, of Germanic origin.]