What does back up mean or Definition?

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List of meaning for back up

support, back up(verb)

give moral or psychological support, aid, or courage to

"She supported him during the illness"; "Her children always backed her up"

back up, back off, back down(verb)

move backwards from a certain position

"The bully had to back down"

back, back up(verb)

establish as valid or genuine

"Can you back up your claims?"

back up(verb)

make a copy of (a computer file) especially for storage in another place as a security copy

"You'd better back up these files!"

clog, choke off, clog up, back up, congest, choke, foul(verb)

become or cause to become obstructed

"The leaves clog our drains in the Fall"; "The water pipe is backed up"

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