dark glasses is a noun meaning "(plural) spectacles that are darkened or polarized to protect the eyes from the glare of the sun". It carries one recorded sense.
(plural) spectacles that are darkened or polarized to protect the eyes from the glare of the sun
“he was wearing a pair of mirrored shades”
plural
Definitions, synonyms and semantic relations for dark glasses come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.