Is bust a word in the dictionary?

Yes, "bust" is a word in the dictionary. It has multiple meanings and can be used as a noun, verb, or adjective.

Here are some examples:

Noun:

* A sculpture of the upper part of the human body, especially of a woman. "The museum had a collection of ancient Roman busts."

* A failure or disappointment. "Their business venture was a complete bust."

Verb:

* To break or damage something. "The thief busted into the store and stole the cash register."

* To arrest someone. "The police busted the drug dealer."

* To burst or break open. "The pipe busted and flooded the basement."

Adjective:

* Broken or damaged. "The car's engine is busted."

* Unpopular or unsuccessful. "The movie was a bust at the box office."

So, "bust" is a legitimate and versatile word with a variety of meanings.