I. blind‧fold¹ /ˈblaɪndfəʊld $ -foʊld/ noun [countable]
a piece of cloth that covers someone’s eyes to prevent them from seeing anything

[TahlilGaran] Dictionary of Contemporary English ▲

II. blindfold² verb [transitive]
[Date: 1500-1600; Origin: blindfell 'to make blind, cover the eyes of' (13-16 centuries), from blind + ⇒ fell³; influenced by fold]
to cover someone’s eyes with a piece of cloth:
Blindfold the prisoner!

[TahlilGaran] Dictionary of Contemporary English ▲

III. blindfold³ British English (also blind‧fold‧ed /ˈblaɪndfəʊldəd, ˈblaɪndfəʊldɪd $ -foʊld-/) adverb

1. with your eyes covered by a piece of cloth

2. can do something blindfold informal used to say that it is very easy for you to do something because you have done it so often

[TahlilGaran] Dictionary of Contemporary English ▲