a girl who puts out; short for bustdown; a slut, whore, skank, etc.
Guy1: So did you end up getting with Lauren?
Guy2: Nahhh man she's a bustie.
by acoolkid August 14, 2009
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Female with large breasts, usually the cause of car accidents, neck cricks and walking into walls.
Seeing the group of busty girls with barely there bikinis on the beach, we knew why guys loved this place.
by CaptainMarvel March 22, 2004
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adj - boobs that are so big they look as though they will bust through the shirt
Dang that girl has some busty tits.
by skathead September 11, 2011
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A substitute noun when you get a mental block or just plain can't be bothered saying the word you mean. It's a bastardisation of the Greek word pousti (an insulting term for a homosexual man). Unlike the original Greek word, busti carries no homophobic connotations.
Hey, could you pass me the busti?
by vastheman August 17, 2009
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(Of a woman's body) Large-breasted. Very busty women are often buxom, plump, and voluptuous in body.

Men tend to like busty women more, and feel that they've died and gone to heaven when they see a lady with breasts the size of honeydew melons.
Plump women are usually the busty ones; thin women often don't have naturally large breasts, like Britney Spears, for instance.

Often it depends on your genetics; some thin women have naturally large breasts while some don't.
by Lorelili March 20, 2005
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A word you mistakenly type instead of 'busy' when addressing an email to a predominantly female group of recipients. Followed by a tough climb down.
I know your office has become quite busty recently.

While you are all busty, I hope you'll be able to make time for this.
by Vancouver Gooner December 20, 2013
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