(transitive, slang) To catch (someone) in the act of doing something wrong, socially and morally inappropriate, or illegal, especially when being done in a sneaky or secretive state.

Sense（4）

(snowboarding) An emphatic synonym of do or get.

He busted huge air off that jump!

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Sense（5）

(US, informal) To reduce in rank.

He busted him down to patrolman for insubordination.

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Sense（6）

(finance, transitive) To undo a trade, generally an error trade, that has already been executed.

Sense（7）

(poker) To lose all of one's chips.

Sense（8）

(blackjack) To exceed a score of 21.

Sense（9）

(transitive, slang) To break in (an animal).

A few weeks later, Richard was killed accidentally while busting a wild mustang […]

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Sense（10）

(transitive, slang) To break in (a woman or girl), To deflower

Smith hears Nancy's protests - "Don't ... no, please don't." - when Hicock menaces her with "You ever had a man?" Finding Hicock rubbing her thigh as she whimpers in fear, Smith confronts him about his intentions, and Hicock says, "First, I'm going to bust that little girl." Smith tells him no, but Hicock replies, "What do you care? You can bust her too."

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