Bible Dictionaries
Frost Signal

Webster's Dictionary

A signal consisting of a white flag with a black center, used by the United States Weather Bureau to indicate that a local frost is expected. It is used only in Florida and along the coasts of the Pacific and the Gulf Mexico.

Bibliography Information
Webster, Noah. Entry for 'Frost Signal'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​f/frost-signal.html. 1828.