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

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

A recidivist; one who backslides, especially in a religious sense; an apostate.

plural of background process

(baseball, rare) Synonym of outfield. / (American football) The area behind the line of scrimmage occupied before the snap by the team on offense.

(athletics, horse racing, car racing) Synonym of back straight (“straight part of a racetrack, running track, etc., opposite the finishing line”).

(astronomy) All the electromagnetic radiation entering the Earth from non-point sources in deep space.

Alternative spelling of back seat

Any music played in a public space whose main function is to create an atmosphere suitable to a specific occasion, rather than to be listened to.

Associated with neighborhoods on back streets, often in older neighborhoods, with poorer residents. / (figuratively) Done in poor and unsanitary conditions, secretly and illegally; back-alley.