the act of providing approval and support; "his vigorous backing of the conservatives got him in trouble with progressives";
(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";
a subordinate musical part; provides background for more important parts;
someone who takes the place of another (as when things get dangerous or difficult); "the star had a stand-in for dangerous scenes"; "we need extra employees for summer fill-ins";
an accumulation caused by clogging or a stoppage; "a traffic backup on the main street"; "he discovered a backup in the toilet";
