\Dos`-[`a]-dos"\, adv. [F.]
Back to back; as, to sit dos-[`a]-dos in a dogcart; to dance
dos-[`a]-dos, or so that two dancers move forward and pass
back to back.

\Dos`-[`a]-dos"\, n.
A sofa, open carriage, or the like, so constructed that the
occupants sit back to back.