The term "bogart"
was first heard in reference to a fairy in popular Yorkshire folk-myth. This fairy was known to be extremely hostile and mischievous.
The term, used as a verb in modern English, is defined as "To bully, to act tough or belligerent"
.
Oddly enough, that definition was not derived from the actions of the mythical bogart. Instead, the verb "to bogart"
was coined in English because of the tough, bully roles that were played by Humphrey Bogart in movies.