(computer science) a copy of a file or directory on a separate storage device; "he made a backup in case the original was accidentally damaged or erased"
an accumulation caused by clogging or a stoppage; "a traffic backup on the main street"; "he discovered a backup in the toilet"
being or characteristic of government by representation in which citizens exercise power through elected officers and representatives; "representative government as defined by Abraham Lincoln is government of the people, by the people, for the people"
standing for something else; "the bald eagle is representative of the United States"
serving to represent or typify; "representative moviegoers"; "a representative modern play"