What does the term blitzkrieg mean

Here are some definitions of blitz noun1. Military. an overwhelming all-out attack, especially a swift ground attackusing armored units and air support. an intensive aerial bombing. 2. any swift, vigorous attack, barrage, or defeat: a blitz of commercials every few minutes. 3. Football. act or instance of charging directly for (the passer) as soon as the ball is snapped; red-dogging. 4. bingo.

This is a German word meaning to bring about a swift or very very quick victory