The quality or state of being smooth, shiny, and transparent or translucent like glass.
From 'glassy' (adjective) + the suffix '-ness' (forming nouns of quality or state). 'Glassy' comes from Old English 'glæs' (glass) + '-y' (resembling or full of).
The glassiness of someone's eyes is often described in literature as a sign of shock or lifelessness—it's a striking image because our eyes are usually expressive, so when they become 'glassy,' it signals that the person has emotionally 'checked out.'
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