How do you spell Glassy

Available Definitions:
1)  a. - Made of glass; vitreous; as, a glassy substance.
2)  a. - Resembling glass in its properties, as in smoothness, brittleness, or transparency; as, a glassy stream; a glassy surface; the glassy deep.
3)  a. - Dull; wanting life or fire; lackluster; -- said of the eyes.