noun.
See horn, n., 4 .
noun.
The appearance of the crescent moon.
noun.
A mock serenade with tin horns and other discordant instruments, performed either in humorous congratulation, as of a newly married couple, or as a manifestation of public disapproval, as of some obnoxious person.
noun.
Public proclamation by the blowing of a horn; specifically, same as letters of horning.