bulletproof

[bool-it-proof]
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:
1855–60; bullet + -proof

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
bulletproof (ˈbʊlɪtˌpruːf)
 
adj
1.  not penetrable by bullets: bulletproof glass
 
vb
2.  (tr) to make bulletproof

Collins English Dictionary - Complete & Unabridged 10th Edition
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FOLDOC
Computing Dictionary

bulletproof definition


Used of an algorithm or implementation considered extremely robust; lossage-resistant; capable of correctly recovering from any imaginable exception condition - a rare and valued quality. Synonym armor-plated.
[Jargon File]

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Example sentences
The thing felt pretty bulletproof during my short test-drive.
The site itself is a beautiful tribute, right down to the bulletproof red
  plastic case.
The suggestions of changing common practices is to improve the data itself, and
  make it more bulletproof.
His bulletproof vest stopped the bullets, and he was not injured.
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