(v.)

1. Showing a lot of cleavage

2. Resting with breasts exposed
1. "Dude! Michelle was breastin out in the middle of class today!"

2. Dana was too tired to finish changing so she fell asleep breastin it out
by Sydney F. January 22, 2012
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A female that suffers from overly large breasts.
Wow Jennifer's breasts are unordinarily largeBreastinitis
by Dr.TitsMcgee March 22, 2009
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The final stop on the way to the breasts, usually on a 3rd date.
Sophie and I were having a good time at the movies, when the idea of a breastination came into my head.
by backotruck June 15, 2012
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