glassy

Short definition from Wiktionary

Adjective

1. 1
   Of or like glass, especially in being smooth and somewhat reflective.
2. 2
   Of or like glass, especially in being smooth and somewhat reflective: Lacking any chop; smooth and mostly flat.
3. 3
   Including a lot of glass.
4. 4
   Including a lot of glass: Extensively glazed.
5. 5
   Dull; expressionless; lifeless.

Noun

1. 1
   A glass marble.