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POW is short for Prisoner of War

POW is also a shortened name of the Polish Military Organisation active before and during the World War I

Pow is an onomatopoeia found commonly in comic strips to describe an action.

Pow! is a song released by Lethal bizzle which then got banned for promoting gun culture.

Pow! is the name of a British comic that appeared in the 1960s.

POW is an NES game. See P.O.W.: Prisoners of War.

POW is also a PC game.

PoW is an abbreviation for Palace on Wheels, a train in India.

POW is a television series in Great Britain that premiered in 2003. See IMDb link

pow(x, y) is the exponentiation operation in the C programming language and several others.

POW! (Purveyors of Wonder) Entertainment is a media production company formed by Gill Champion, Arthur Lieberman and comic book legend Stan Lee in 2005; Lee serves as the "face" of the company for public relations purposes. POW!'s productions include the 2006 Sci Fi Channel original feature film Stan Lee's Lightspeed and the reality television series Who Wants to be a Superhero?. A controversy is currently budding over assertions that significant portions of the cast and crew of Lightspeed did not receive payment for their services on the film; a class action lawsuit against POW! and the film's executive producer is reportedly in the works.

PoW Is a local term for Prince of Wales Island, Alaska.