noun
1. obsolete : a crystal or mirror used to predict the future
in Time's long and dark prospective glass, foresaw what future days should bring to pass — John Milton
2. : a small portable telescope
noun
1. obsolete : a crystal or mirror used to predict the future
in Time's long and dark prospective glass, foresaw what future days should bring to pass — John Milton
2. : a small portable telescope
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012