Billy has several meanings.

*Variant of the name William.
*For the cooking utensil see billycan.
*A F-Zero racer
*A character from the TV show Billy and Mandy
*See Sport Billy for the show of this name.
*For the breed of dog see Billy (dog).
*A slang/colloquial English nickname for a loner or outsider (ie. Billy-no-mates).
*A slang term for the drug Amphetamine, a shortened version...(continue reading)