Definition of "dark glasses" []

• Spectacles that are darkened or polarized to protect the eyes from the glare of the sun (noun)

WordNet. Princeton University. 2010.

• "Lipton—in a fake beard and mustache, dark glasses on, cap pulled down tight, the LIPTON CONSTRUCTION lettering on his jacket standing out in bold red letters against the denim background—walks down the hall, leading Jenna Patrick down the familiar path to the lap-dance cubicles."
• "They could barely make out the Las Vegas Stars logo on the ball cap, and the large dark glasses gave him the appearance of an oversized insect."
• "At close quarters she had watched discreetly, cool and elegant behind inscrutable dark glasses on the hotel or Yacht Club terrace or on a bench near the Southampton ferry just along from where his boat was moored."