backupnoun/ˈbækˌʌp/

• 1

  A reserve or substitute.

  • If the goalkeeper is injured, we have a backup.
• 2

  computingengineeringmathematicsA copy of a file or record, stored separately from the original, that can be used to recover the original if it is damaged or destroyed.

  • After the power failure, we had to restore the database from backup.
• 3

  An accumulation of material caused by a (partial) obstruction or (complete) blockage of the flow or movement of the material, or an accumulation of material that causes an overflow due to the flow being greater than the maximum possible flow.

  • The accident caused a mile-long backup on the highway.
  • The blockage caused a backup in the plumbing.
• 4

  governmentlaw-enforcementReinforcements.

  • He's got a gun! You'd better send for backup.
• 5

  Any support or extra help.

  • Shaman: My patience is tested, but Uvenk invokes correctly. Grunt, who is your krantt? Your allies willing to kill and die on your behalf? Shepard: How is a candidate tested if he brings backup on his Rite of Passage? Shaman: Not every krogan can be the strongest warrior, but each must inspire his peers to battle at his side. Shaman: If the ones who know you best can find nothing worthy in you, you should wander the wastes and die alone before you weaken my clan.
  • This guy, he grabs the dog by the ears, stares it down like a cowboy in a showdown. The man regains control again. He scans the area, hoping for backup. Nothing. No neighbours, no dog whisperers, no animal control.
• 6

  entertainmentlifestylemusicAccompaniment.

  • Debbie Ahn, on piano, provided some mesmerizing back-up and many fiery, on-target solos.
• 7

  Corroboration.

  • Pg. 206 on Yudit's comments on the feminists of Tel Aviv, "... and now they are translating Our Bodies Ourselves into Hebrew, leaving out the section on gays" was misinformed, a statement made without authoratative ^([sic]) backup in 1979 about a book first published in 1982.

backupadj/ˈbækˌʌp/

• 1

  Standby, reserve or extra.

  • I am only a backup player.
• 2

  computingengineeringmathematicsThat is intended as a backup.

  • Make a backup copy of that file.
• 3

  Supporting, reinforcing; (music) of or related to accompaniment

這個拼法也被記錄為下列字的變化形：

• back up