(of two similar events) following one immediately after the other; in unbroken sequence; consecutively:
After losing all day, he picked winners back to back in the last two races.
adjective, Also, back-to-back
2.
adjacent or contiguous but oppositely oriented; having the backs close together or adjoining:
The seats in the day coach are back to back.
3.
Stud Poker. (of a pair) consisting of the hole card and the first upcard:
He had aces back to back.
Examples from the web for back to back
They are built in the back yard, generally back to back with the rear buildings on abutting lots.
When placed back to back with the tallest of the boat's crew, he tried his best to edge on higher ground, and to stand on tiptoe.
Had he seen the whole picture, each story nicely placed back to back, he may have discerned a common problem.
The back to back distance on the wheel axles was measured and also found to be within specifications.
The court indicated that the cases would be heard back to back because they were not currently joined.
Idioms and Phrases with back to back
back to back
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With backs close together or touching, as in In the first and second rows of the bus, the seats were back to back, an unusual arrangement. This term also can be applied to persons who stand facing in opposite directions and with their backs touching. [ Mid-1800s ]
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Consecutively, one after another, as in I'm exhausted; I had three meetings back to back. [ Mid-1900s ]