(transitive) Alternative spelling of back onto

(transitive) To reverse a vehicle onto something. / (transitive) To overlook something from the rear.

(literally) To move backwards away from something. / (idiomatic) To become less aggressive, particularly when one had appeared committed to act. / (idiomatic) To lower the setting of.

(idiomatic) To reply impertinently; to talk back. / To reply to a question at a later time. / (computing) To issue echo characters, protocol responses, reflexive connection requests, etc.

(film) A cinematic technique in which live action is filmed in front of a screen on which the background action or a background scene is projected. / tomographic reconstruction

(athletics, horse racing) The straight part of a racetrack, running track, etc., opposite the finishing line; the backstretch.

(computing, Unix) A process that is not currently able to receive input from its controlling terminal.

(temporal location, idiomatic, informal) In the distant past; especially, at a time fondly remembered.

(cricket, of a batsman) Having the weight on the back foot in order to play a defensive stroke / (idiomatic) in a defensive posture; on the defensive; off balance; at a disadvantage.

(baseball) The rotation of the knee and lower body of the side of the batter away from the pitcher during a swing.