Bully is a word with multiple meanings:
1. As a noun: a person who uses strength or power to harm or intimidate those who are weaker.
2. As a verb: to use superior strength or influence to intimidate someone, typically to force them to do something.
3. In slang: can be used as an exclamation meaning "great" or "awesome" (though this usage is less common).
4. In historical context: a hired ruffian or thug.
5. In card games: the best hand in a game.