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shutoff

[shuht-awf, -of] /ˈʃʌtˌɔf, -ˌɒf/
noun
1.
an object or device that shuts (something) off:
the automatic shutoff on a heater.
2.
an act or instance of shutting off something, as an opening, a flow, or a service:
a shutoff of electric power due to unpaid bills.
Also, shut-off.
Origin
1865-1870
1865-70; noun use of verb phrase shut off
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for shut-off

shut-off

noun
1.
a device that shuts something off, esp a machine control
2.
a stoppage or cessation
verb (transitive, adverb)
3.
to stem the flow of
4.
to block off the passage through
5.
to isolate or separate
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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