(idiomatic) sequential or consecutive, in the case of exactly three events.

Alternative form of back-to-back

With one's back facing that of somebody else. / Consecutively; one after the other. / (poker slang) Synonym of wired (“being a pair in seven card stud with one face up and one face down”)

A house with a party wall at the rear.

sequential or consecutive. / With one's back facing that of somebody else. / (physics, by extension) emerging in exactly opposite directions / (of a house) Having a party wall at the rear

Alternative form of back to back

plural of back-to-back

As a result of; after; subsequent to. / (derogatory) By the effort of; by drawing an unfair advantage from.

Back in its adverbial senses. / Situated, located, or toward the rear; backward or in reverse; in return; again. / (UK, obsolete) False; pseudo-.

Used other than figuratively or idiomatically: see back, into. / (sports, idiomatic) To advance to the post-season as a result of another team's loss, especially where one's own team has also lost.