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back up

  1. provide support for someone or something.
    "his mother backed him up on everything"
  2. make a spare copy of data or a disk.
  3. (of vehicles) form a line due to congestion.
    "the traffic began to back up"
  4. move or drive backward.
    "she backed up until she found herself against the wall"
  5. (of running water) accumulate behind an obstruction.

People also ask
4 days ago · The meaning of BACKUP is one that serves as a substitute or support. How to use backup in a sentence.
(someone or something that provides) support or help, or something that you have arranged in case your main plans, equipment, etc. go wrong:.
A backup is a person or thing that supports another, as in My role as the backup for the sales team is to take calls when the rest of the team is busy.
back up in American English · 1. to support or help · 2. to move or go backward. : also back away · 3. to accumulate as the result of a stoppage. traffic backed ...
Backup is what someone gives when they help or support you. A brand new doctor might need some backup in the emergency room for the first few weeks.
Aug 31, 2023 · Backup refers to the process of making copies of data or data files to use in the event the original data or data files are lost or ...
1[uncountable, countable] extra help or support that you can get if necessary The police had backup from the army. · 2(computing) [countable] a copy of a file, ...
to say that someone is telling the truth: Honestly, that's exactly what happened - Claire will back me up.
Backup consists of extra equipment or people that you can get help or support from if necessary. There is no emergency backup immediately available.
backup · Always make a backup of your work. · a backup copy. see also back something up ...