It is an italian acronym which means "porco dio", frequently used in chat room or text.
Mario, dovv'è la bamba pd!?
by Lulz1911 July 7, 2011
it means "Porco Dio!!", Curse word used many times in Italian, it's used to offend "god" or "lord", the translation in English could be: "omfg" or "fucking god", but in Italian it literally means: "God is a pig" or "Pig God", sometimes the "pig word" can be replaced with any other animal, the dog it's used more often.
porco dio (pd) ho perso di nuovo! -> omfg (which could significate pd) i lost again!
by kr4ne July 17, 2015
An abbreviation for "Pixel Dating"

This is a common way to advance yourself in a game or other online activity without doing much, if any, work.
Dude I pd'd this bitch and she got me 99 cooking!
by notapder June 15, 2010
Perfect Dark. Great fps stretching the limits of the N64.
Who's up for some pd?
by George November 3, 2004
He get's all the hunnies. He must be a PD.
by Jenn May 6, 2005
Public Defender. An attorney appointed to represent a defendant who cannot afford to hire private counsel.
"I want me a real lawyer, not a PD."
by Schmeni July 11, 2006