Definition of: dos-a-dos

(dō·zá·dō′) adverb French
Back to back.
—noun plural dos–à–dos (-dōz′, Fr. -dō′)
1. An open vehicle, sofa, etc., made so the occupants sit back to back.
2. (dō′sē·dō′) In square dances, a call directing the dancers to pass each other back to back.