proof

any factual evidence that helps to establish the truth of something; "if you have any proof for what you say, now is the time to produce it"

a formal series of statements showing that if one thing is true something else necessarily follows from it

a measure of alcoholic strength expressed as an integer twice the percentage of alcohol present (by volume)

(printing) an impression made to check for errors

a trial photographic print from a negative

the act of validating; finding or testing the truth of something

make or take a proof of, such as a photographic negative, an etching, or typeset

knead to reach proper lightness; "proof dough"

read for errors; "I should proofread my manuscripts"

activate by mixing with water and sometimes sugar or milk; "proof yeast"

make resistant (to harm); "proof the materials against shrinking in the dryer"

(used in combination or as a suffix) able to withstand; "temptation-proof"; "childproof locks"