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Dictionary

bul•let•proof

Pronunciation: (bool'it-prOOf"), [key]
—adj.
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.

—v.t.
to make (something) bulletproof.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

bulletin board

bullet train

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