n. A ball, usually made of quartz crystal (glass) that is used by fortune-tellers. The fortune-teller at the fair looked into her crystal ball and told me that I would take a long trip next year. 2. Any means of predicting the future. My crystal ball tells me you'll be making the honor roll.
CRYSTAL BALL
Meaning of CRYSTAL BALL in English
American idioms English vocabulary. Английский словарь американских идиом. 2012