Wiktionary
vb. (context transitive intransitive English) To stop or turn off by close something (such as a valve).
WordNet
Usage examples of "shut off".
The moment the lock whistle shut off, she could feel the shell moving gently, gently away from Callisto.
It not only served to enlarge the store-room, but also shut off from view a second portion of the cellar, smaller than the first, and containing appointments which indicated that it was sometimes inhabited.
Howard shut off the water, stepped from the stall, and reached for the neatly folded towel next to the shower door.
That means something has been shut off somewhere along the line, and these people will end up hiding behind the false personality that works professionally.
Not only was that life uneventful, but it was studiously shut off from the public eye.
Just imagine if he could shut off the conversation in the bar by pressing a button.
Therefore he was so shut off from all comfort that he saw no remedy or way of escaping from his misery except in death, and said that he was shaken with horror.
By this change in her position all her lights were in a very few moments shut off from the boat to leeward.
Then silence, and when the smoke had cleared, the revolving temple had shut off all sight or sound from the chamber in which the three beautiful women were imprisoned.