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doorstop

[dawr-stop, dohr-] /ˈdɔrˌstɒp, ˈdoʊr-/
noun
1.
a device for holding a door open, as a wedge or small weight.
2.
Also called slamming stile, stop. (in a doorframe) a strip or projecting surface against which the door closes.
3.
a device for preventing a door from striking a wall or an object on a wall, as a small rubber-covered projection.
Origin of doorstop
1870-1875
1870-75, Americanism; door + stop
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for doorstop

doorstop

/ˈdɔːˌstɒp/
noun
1.
a heavy object, wedge, or other device which prevents an open door from moving
2.
a projecting piece of rubber, etc, fixed to the floor to stop a door from striking a wall
3.
(informal) a very thick book
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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doorstop in Technology


Used to describe equipment that is non-functional and halfway expected to remain so, especially obsolete equipment kept around for political reasons or ostensibly as a backup. "When we get another Wyse-50 in here, that ADM 3 will turn into a doorstop."
Compare boat anchor.
[Jargon File]

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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11
12
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