verb (used with object), debugged, debugging. Informal.
to detect and remove defects or errors from.
to remove electronic bugs from (a room or building).
Computers. to detect and remove errors from (a computer program).
to rid (a garden, plant, etc.) of insect pests, as by the application of a pesticide.

1940–45; de- + bug1

debugger, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
debug (diːˈbʌɡ)
vb , -bugs, -bugging, -bugged
1.  to locate and remove concealed microphones from (a room, etc)
2.  to locate and remove defects in (a device, system, plan, etc)
3.  to remove insects from
4.  a.  something, esp a computer program, that locates and removes defects in (a device, system, etc)
 b.  (as modifier): a debug program
[C20: from de- + bug1]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

1945, of machine systems, from de- + bug "glitch, defect in a machine." Meaning "to remove a concealed microphone" is from 1964.
Online Etymology Dictionary, © 2010 Douglas Harper
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Computing Dictionary

DEBUG definition

software, tool
The bundled compiler/assembler for DOS/Windows after CP/M.
[Did CP/M have "DEBUG"?]
["DOS Power Tools, Techniques, Tricks, and Utilities, PC Magazine, Paul Somerson Executive Editor, Bantam Books, 1988].

The Free On-line Dictionary of Computing, © Denis Howe 2010
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Example sentences
However, systems composed of interacting agents are notoriously difficult to test and debug.
And then you'd have to debug it and get it to work right.
She also coined the term debug was when she found the cause of an error that was actually a moth stuck in the machine.
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