(~s)
Frequency: The word is one of the 3000 most common words in English.
1.
Proof is a fact, argument, or piece of evidence which shows that something is definitely true or definitely exists.
You have to have ~ of residence in the state of Texas, such as a Texas ID card...
This is not necessarily ~ that he is wrong...
N-VAR: oft N of n, N that
2.
In publishing, the ~s of a book, magazine, or article are a first copy of it that is printed so that mistakes can be corrected before more copies are printed and published.
I’m correcting the ~s of the Spanish edition right now.
N-COUNT: usu pl, oft N of n
•
Proof is also an adjective.
...an uncorrected ~ copy of the book.
ADJ: ADJ n
3.
Proof is used after a number of degrees or a percentage, when indicating the strength of a strong alcoholic drink such as whisky.
...a glass of Wild Turkey bourbon: 101 degrees ~.
ADJ: amount ADJ
4.
the ~ of the pudding is in the eating: see pudding