Having the eyes covered with a cloth or other material so you cannot see.
From 'blind' (unable to see) + 'fold' (to cover). The compound emerged in the 1500s and combines the concept of blindness with the action of folding cloth over the eyes.
Blindfold is one of the few words where the two parts actually describe the action—you literally fold something to make someone blind, which is why it's such a perfect word!
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