glassy

adjective (glassier, glassiest)

• 1of or resembling glass in some way, in particular.
• having the physical properties of glass; vitreous:glassy lavas
• (of water) having a smooth surface.
• (of sound) resembling the sharp or ringing noise made when glass is struck:a glassy clink

• 2(of a person’s eyes or expression) showing no interest or animation; dull and glazed.