Search Result for "polaroid": 
Wordnet 3.0

NOUN (1)

1. (trade mark) a plastic film that can polarize a beam of light; often used in sunglasses to eliminate glare; 



WordNet (r) 3.0 (2006):

Polaroid
    n 1: (trade mark) a plastic film that can polarize a beam of
         light; often used in sunglasses to eliminate glare