back-to-back
adjective
[ ˌbaktəˈbak ]
• (of houses) built in a continuous terrace backing on to another terrace, with a party wall or a narrow alley between.
• "rows of back-to-back houses"
• consecutive.
• "his back-to-back victories in the Hungarian and Belgian Grands Prix"
back-to-back
noun
• a house in a back-to-back terrace.
• "a street of Victorian back-to-backs"
back-to-back
adverb
• (of two people) facing in opposite directions with their backs touching.
• "they sat on the ground, leaning back to back"
• consecutively; in succession.
• "the games were played back to back"
