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Polaroid

noun (GLASSES)
 
 
/ˈpəʊ.lər.ɔɪd/ US  /ˈpoʊ.lə.rɔɪd/

Definition

Polaroids [plural] mainly UK trademark dark glasses that have been treated with a substance that reduces the amount of reflected light that reaches the eyes: I always wear Polaroids when I'm driving.Optics, microscopy and lasersEyesight, glasses and lenses
(Definition of Polaroid noun (GLASSES) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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