Do-si-do
（重定向自Dosido）
Do-si-do (/doʊsidˈoʊ/, /doʊzidˈoʊ/), dosado, or dos-à-dos (see spelling below) is a basic dance step in such dances as square dance, contra dance, polka, various historical dances, and some reels.
The term is a corruption of the original French term dos-à-dos for the dance move, which means "back to back", as opposed to "vis-à-vis" which means "face to face".