'shut down' definitions:

Definition of 'shut down'

From: WordNet
verb
Cease to operate or cause to cease operating; "The owners decided to move and to close the factory"; "My business closes every night at 8 P.M."; "close up the shop" [syn: close up, close, fold, shut down, close down] [ant: open, open up]

Synonyms of 'shut down'

From: Moby Thesaurus