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bulletproof

[boo l-it-proof] /ˈbʊl ɪtˌpruf/
adjective
1.
(of vehicles, glass, clothing, etc.) capable of resisting or absorbing the impact of a bullet.
2.
Informal. safe from failure; without errors or shortcomings and beyond criticism:
a bulletproof system; a bulletproof budget.
verb (used with object)
3.
to make (something) bulletproof.
Origin
1855-1860
1855-60; bullet + -proof
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for bullet proofed

bulletproof

/ˈbʊlɪtˌpruːf/
adjective
1.
not penetrable by bullets bulletproof glass
verb
2.
(transitive) to make bulletproof
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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