Stands for purple kush, a potent strain of marijuana which can be purple coloured.

commonly used in MMORPG,
meaning to kill another player, PK is abreviation for Player Kill.

online game term
pk=playerkill
concerns the killing of a players avatar
in game
used in most modern mmorpgs

In Cantonese swearing, means "pouk gai", which is tripping on a street, falling because of tripping, or saying that someone's condition or personality is like one who "pouk gai".

PK is a penalty kick-term used in soccer.

pussykiller- a man who eats real good pussy

short for "pain killer"

as in opiate prescription drugs.