Sunglass

noun

Definitions

Noun
  1. 1
    Attributive form of sunglasses, used chiefly in phrases. attributive, form-of

    "a sunglass holder"

  2. 2
    A convex lens of glass for producing heat by converging the sun's rays into a focus. archaic

    "Lighting a cigar with a sunglass"

  3. 3
    a convex lens that focuses the rays of the sun; used to start a fire wordnet

Etymology

Etymology 1

From sun + glass, as a back-formation when referring to sunglasses.

Etymology 2

From sun + glass, as a back-formation when referring to sunglasses.

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