A piece of glimmering, shining mineral resembling ice or glass.
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.
The glass over the dial of a watch case.
Very clear.
"Do I make myself clear?" / "Crystal."
A flat mass of floating ice, smaller than an ice field.
An ice dam (ice jam), a blockage of ice in a river starting with an ice floe in the river.
Any type of sea ice not attached to land, drift ice.
An ice stream (ice flow), a type of fast moving glacier