dos-à-dos

back to back

From dos (“back”), from Latin dorsum (“back”), and à (“to”), from Latin ad (“to”).

a move in square dancing in which two dancers face each other, then step forward and left until they have right shoulders adjacent, then move to a position where they are back to back, then move to have left shoulders adjacent, then return to facing each other

From dos (“back”), from Latin dorsum (“back”), and à (“to”), from Latin ad (“to”).