The glass over the dial of a watch case.
A fine type of glassware, or the material used to make it.
Crystal meth: methamphetamine hydrochloride.
A solid composed of an array of atoms or molecules possessing long-range order and arranged in a pattern which is periodic in three dimensions.
A piece of glimmering, shining mineral resembling ice or glass.
Very clear.
"Do I make myself clear?" / "Crystal."
The glass covering of the face of a watch.
A sandglass.
An item of glass laboratory equipment consisting of a simple, slightly concave circle of glass. It is a general utility item, used to hold small samples, to evaporate liquids, to cover a beaker, and so on.