(-Is it clear?) -Crystal clear!: (-Is it clear?) -Completely, totally understood, of course! idiom
crystal: a solid with a regular internal structure and symmetrical arrangement of faces noun
  • "Luna : Crystal."
  • "Nerdy guy : Tell me, Edward, which type of crystal was used by the Jedi knights to construct their light sabers?"

Still unsure of the best way to use 'Crystal'? Improve your English thanks to our online English lessons. We offer a free test as well as a free level assessment!

What our users say:



I enjoy doing my online English lessons. Only ten minutes daily are enough...Thank you!



I love your innovative method which allows me to learn a new language and have fun at the same time!



Your method is unique! Your courses have helped me to progress and gain confidence during my travels.



Gymglish has allowed me to improve my English. A daily routine I wouldn't miss for anything in the world!

More testimonials.

Test your English with Gymglish today and get a free level assessment

Absolutely free - no strings attached.