Top definition
An acronym for Bang-In-Order-Older-Woman similar to a MILF but dispenses with needing to make assumptions about child rearing
My God I gave that BIOOW a great Angry Dragon last night
by Sydney Beige April 02, 2009
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug