基地閉鎖[kichiheisa] (military) base closing
金鎖[kingusari] golden chain
鎖国[sakoku] national isolation
鎖骨[sakotsu] collarbone
鎖樋[kusaritoi] rain chain (hanging from a gutter and functioning as downspout, often made of ornamental cups)

再封鎖[saifuusa] reblocking
道路封鎖[dourofuusa] roadblock
封鎖[fuusa] blockade
鎖す[sasu] to shut