man is down definition
Top Definition. Man down. The appropriate phrase to use in battle which means that a soldier in your group is lying on the ground. This has been twisted into Caribbean slang to signify the same thing in context but with literal meaning and sometimes physical.ike the time, when you were supposed to pick up the beer for the game, and instead you spent the morning at Bed Bath & Beyond with your fiancee, and when you got to your buddy's apartment for the game they had pizza but no beer, and everyone said, Dude, you really went man down on this one.