D defs.my
Entry 2 senses Webster, 1913

back-to-back

· IPA /ˌbæk.təˈbæk/
01 adj. occurring immediately one after the other; consecutive.
  1. 1.
    occurring immediately one after the other; consecutive.
  2. 2.
    oriented with the backs toward each other, and sometimes touching.
Syn. consecutive.