shut off

shut off idiom
  1. Stop the flow or passage of, as in They shut off the water while repairs were being made. [Early 1800s]
  2. Close off, isolate, as in Loners shut themselves off from the community. [First half of 1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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