shutoff

or shut-off

[ shuht-awf, -of ]
/ ˈʃʌtˌɔf, -ˌɒf /

noun

an object or device that shuts (something) off: the automatic shutoff on a heater.
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.

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Origin of shutoff

First recorded in 1865–70; noun use of verb phrase shut off

Definition for shut off (2 of 2)

Origin of shut

before 1000; Middle English s(c)hutten, s(c)hetten, s(c)hitten Old English scyttan “to bolt (a door)”; akin to shoot1

synonym study for shut

1. See close.

OTHER WORDS FROM shut

half-shut, adjectivere·shut, verb, re·shut, re·shut·ting.un·shut, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for shut off

shut
/ (ʃʌt) /

verb shuts, shutting or shut

adjective

closed or fastened

noun

Word Origin for shut

Old English scyttan; related to Old Frisian sketta to shut in, Middle Dutch schutten to obstruct
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

Idioms and Phrases with shut off (1 of 2)

shut off

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]

Idioms and Phrases with shut off (2 of 2)

shut

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.