(computing) Capable of being backed up.

Misspelling of back up.

Standby, reserve or extra. / (computing) That is intended as a backup. / Supporting, reinforcing; (music) of or related to accompaniment

A reserve or substitute. / (computing) A copy of a file or record, stored separately from the original, that can be used to recover the original if it is destroyed or damaged.

plural of backup

(nonstandard, proscribed) Misconstruction of backed up

(music) A member of a group of singers who provide backup vocals to a song

(music) The chorus and other words and sounds sung by backup vocalists to provide accompaniment to a song / (music) The people who sing these vocals

(computing) A backup method where only the information that has changed since a previous backup is saved.

An alarm that sounds when a vehicle is moving in reverse, to warn pedestrians.