A person who reads proof, copy or other text, looking for errors and making corrections

Alternative spelling of bulletproof (Capable of withstanding a direct shot, reliable, or unbreakable).

Designed and constructed to withstand or minimize damage from an internal or external explosion.

(logic) The indirect verification or falsification of a statement by the verification or falsification of each of the finite number of cases which arise therefrom.

plural of proof by exhaustion

(rare, software engineering) proof of concept; pilot project

plural of burden of proof

Alternative spelling of leakproof

(US) Used other than figuratively or idiomatically: 55% alcohol by volume. / (idiomatic) Stronger than strong.

Intensely; strongly.