Support, especially financial. / A liner or other material added behind or underneath. / (television, film) A backdrop. / (music) Musicians and vocalists who support the main performer.

(music) Providing support for the main performer.

present participle of back

plural of backing

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

Alternative form of back to back

Alternative form of back-to-back

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

A house with a party wall at the rear.

plural of back-to-back