Quick definitions from WordNet (glassy)
▸ adjective: resembling glass in smoothness and shininess and slickness ("The glassy surface of the lake")
▸ adjective: used of eyes lacking liveliness ("A glassy stare")
▸ adjective: (of ceramics) having the surface made shiny and nonporous by fusing a vitreous solution to it ("Glassy porcelain")
▸ Also see glassy
▸ adjective: resembling glass in smoothness and shininess and slickness ("The glassy surface of the lake")
▸ adjective: used of eyes lacking liveliness ("A glassy stare")
▸ adjective: (of ceramics) having the surface made shiny and nonporous by fusing a vitreous solution to it ("Glassy porcelain")
▸ Also see glassy