(dentistry) A molar.

(motor racing, of a team) Wholly or substantially supported by financial or technical backing from a car manufacturer, but not necessarily contracted to it.

To return a phone call. / To make another phone call to the same person.

Alternative form of backwater; the water held back by a dam or other obstruction

Alternative form of bass-ackwards

(humorous, colloquial, mildly offensive) Alternative form of ass-backwards

(of a hairstyle) Treated with a wet-look gel and combed straight back

A back-formation; a word formed by removing a perceived morpheme from an older word.

To form a word by a back-formation process.

(idiomatic) The IT and infrastructure support services for a company, separate from the public face of the business.