1 definition by drsteevo

A term for the frothy liquid mixture formed in the vagina when a baby is born. It is a foul smelling combination of maternal blood, vernix, and meconium (baby poop) that drips down over the mother's anus during the third stage of labor. It is thought to be a contraction of the words "birth" and "lather."
Nurse, would you please wipe that birther off the crack of my patient's ass?
by drsteevo July 29, 2009
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