Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

crystal ball


Simple Definition of crystal ball

  • : a clear glass ball in which some people say they can see the future by using magic

Source: Merriam-Webster's Learner's Dictionary

Full Definition of crystal ball

  1. 1 :  a sphere especially of quartz crystal traditionally used by fortune-tellers

  2. 2 :  a means or method of predicting future events

Seen and Heard

What made you want to look up crystal ball? Please tell us where you read or heard it (including the quote, if possible).