A remarkably attractive young woman; i.e. skinny, long-legged, well-dressed, and potentially a high fashion model.
1. Check out the fit bird at eight o'clock.

2. This place is a bummer, man--I haven't seen a fit bird in the joint since we've been here.
by pigeonface May 12, 2005
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Brit: Me and my mates are going to check out the talent and see if there are any fit birds.

Yank: Aight, I think there are some hot chicks.
by d-rizzle512 March 15, 2009
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Luke: Man, that chick is a babe!
Pablo: No, dude, she's a right fit bird.
by Corey Stoltz September 7, 2011
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The overwhelming weight gain in pigeons outside the Fashion Institute of Technology in NYC due to the crazy amount of dieting the fashionista students do.
I was sitting in my office and saw an obese pigeon land on the ledge. He must have a case of FIT Bird Flu bad!
by KitKat83 December 9, 2010
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