クリスタルは英語で
crystal

英語の定義

crystal
1. n. 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.
2. n. A piece of glimmering, shining mineral resembling ice or glass.
3. n. A fine type of glassware, or the material used to make it.
4. n. (slang) Crystal meth: methamphetamine hydrochloride.
5. n. The glass over the dial of a watch case.
6. adj. Very clear.
"Do I make myself clear?" / "Crystal.".