A colloquial term, used primarily in mens lockerrooms, for the female breasts, of the larger variety.    Thought to be a cunning  linquistic derivative of 'vestibules'
Did you see that woman who just walked by?....of a set of breastibules.    I would love to see her naked.
by LaughingAloud January 1, 2009
Get the breastibulesmug.