Last Updated：2025/11/23

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

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sunglass

Source Word

sunglass

Noun

archaic

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

Japanese Meaning

太陽の光を一点に集束させて熱を発生させるための凸面ガラスレンズ（古語）。

The old scientist held a sunglass over the tinder, concentrating the sun's rays until a spark caught.

その老いた科学者は火口の上に集光用の凸レンズをかざし、太陽光を一点に集めて火花が飛び、着火させた。

Sense（1）

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

Lighting a cigar with a sunglass

sunglasses

（ plural ）