proof

(transitive, intransitive, colloquial) To proofread.

(transitive) To make resistant, especially to water.

(transitive, firearms) To test-fire with a load considerably more powerful than the firearm in question's rated maximum chamber pressure, in order to establish the firearm's ability to withstand pressures well in excess of those expected in service without bursting.

(transitive, cooking) To allow yeast-containing dough to rise.

(transitive, cooking) To test the activeness of yeast.