1.
[syn: sunglasses, dark glasses, shades]
The Collaborative International Dictionary of English v.0.48:
Sunglass \Sun"glass`\, n.; pl. Sunglasses.
A convex lens of glass for producing heat by converging the
sun's rays into a focus. "Lighting a cigar with a sunglass."
--Hawthorne.
[1913 Webster]
WordNet (r) 3.0 (2006):
sunglasses
n 1: spectacles that are darkened or polarized to protect the
eyes from the glare of the sun; "he was wearing a pair of
mirrored shades" [syn: sunglasses, dark glasses,
shades]