well, maybe you can think of a square dance. when the caller says "dos-y-dos" you go back to back.
le dos
the noun "back" in french is "le dos". The verb - like "to go back" is "rentre".
the back
Sur mon dos
le dos (masc.) means the back (body part) in French.
sac à dos nm pack (backpack)
'le dos" is the back.Il a mal au dos = he has a backachele dos de la main = the back of the handle dos means the back (of the body). For example 'un sac à dos' is a backpack.
"Back" is an English equivalent of the French word dos. The masculine singular noun most commonly refers to the back side of the human body's trunk. The pronunciation will be "do" in French.
le mal de dos, avoir mal au dos
Sac à dos
Elle a mal au dos
Back (on your body)