Definitions of glass:

• noun:   a glass container for holding liquids while drinking
• noun:   glassware collectively

  Example: "She collected old glass"

• noun:   the quantity a glass will hold
• noun:   a brittle transparent solid with irregular atomic structure
• noun:   a small refracting telescope
• noun:   a mirror; usually a ladies' dressing mirror
• noun:   amphetamine used in the form of a crystalline hydrochloride; used as a stimulant to the nervous system and as an appetite suppressant
• verb:   scan (game in the forest) with binoculars
• verb:   furnish with glass

  Example: "Glass the windows"

• verb:   enclose with glass

  Example: "Glass in a porch"

• verb:   put in a glass container
• verb:   become glassy or take on a glass-like appearance
• name:  A surname (common: 1 in 5555 families; popularity rank in the U.S.: #644)