Defended enclosure or building (4)
I believe the answer is:
fort
(Other definitions for fort that I've seen before include "US gold reserves are at - Knox" , "Defensive building" , "Garrison" , "& 22 US Army post" , "castle, perhaps" .)
I believe the answer is:
fort
(Other definitions for fort that I've seen before include "US gold reserves are at - Knox" , "Defensive building" , "Garrison" , "& 22 US Army post" , "castle, perhaps" .)