"Blind man´s buff or blind man´s bluff is a variant of tag in which the player who is "It" is blindfolded. The traditional name of the ...
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game is "blind man´s buff", where the word buff is used in its older sense of a small push. The game later also became known as "blind man´s bluff"; it is possible that this name is a linguistic corruption." - (en.wikipedia.org 22.09.2019)