by Moggle888 August 26, 2003

by FrenchLascar187 February 16, 2004

Used to denote an absent or deadbeat biological parent (usually male) when terms like "father" or "dad" are inappropriate due to the individual's lack of participation in the child's life.
Sophie's bio has never paid a dime of child support, and he never asks about her when I talk to him.
by mamacitta April 07, 2009

A backflip with a rotation
eg. A Bio 540 = a backflip also rotating through 540 degress horizontally.
eg. A Bio 540 = a backflip also rotating through 540 degress horizontally.
by Brendan April 06, 2003

by DumbGrunt July 27, 2004
