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Classic usage
Reading level: medium
Estimated CEFR level: A2 — Elementary
Estimated from word frequency; not an official CEFR classification.
From Middle English glas, from Old English glæs, from Proto-West Germanic *glas, from Proto-Germanic *glasą, possibly related to Proto-Germanic *glōaną (“to shine”) (compare glow), and ultimately from the Proto-Indo-European root *ǵʰleh₁- (“to shine, shimmer, glow”). Cognate with West Frisian glês, Low German and German Glas, Danish, Dutch, Norwegian Nynorsk, and Swedish glas, Norwegian Bokmål glass, Icelandic gler.
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Classic usage
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