noun
a clear glass ball used by people who claim they can predict what will happen in the future by looking into it :
Without a crystal ball, it's impossible to say where we'll be next year.
noun
a clear glass ball used by people who claim they can predict what will happen in the future by looking into it :
Without a crystal ball, it's impossible to say where we'll be next year.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005