Definition of "back-to-back" in English

adjective

1. Sequential or consecutive.

   • Ruth and Gehrig hit back-to-back home runs.
   • They sat through two back-to-back movies.

2. With one's back facing that of somebody else.

3. (physics, by extension) Emerging in exactly opposite directions.

4. (of a house) Having a party wall at the rear.

   • We lived in a row of back-to-back houses.

5. (poker slang) Synonym of wired (“being a pair in seven card stud with one face up and one face down”).

adverb

1. Alternative form of back to back.

noun

1. A house with a party wall at the rear.

2. (oil industry) One of a pair of rig workers who are rostered on alternately.