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collateral damage

noun
1.
the killing of civilians in a military attack.
2.
any damage incidental to an activity.
Origin
1985-1990
1985-90
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for collateral damages

collateral damage

noun
1.
(military) unintentional damage to civil property and civilian casualties, caused by military operations
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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Word Origin and History for collateral damages

collateral damage

n.

by 1873 in legal cases; in modern use, generally a euphemism for "the coincidental killing of civilians," U.S. coinage, c.1968, at first generally with reference to nuclear weapons.

Online Etymology Dictionary, © 2010 Douglas Harper
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12
16
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