backup ball

Variant of backup

backup definition

back·up or back-up back′·-up′ (-up′)

adjective

  1. standing by as an alternate or auxiliary a backup pilot
  2. supporting a backup effort

noun

  1. the act or result of backing up; specif.,
    1. an accumulation because of a stoppage
    2. a support or help
  2. Bowling a ball that follows a path opposite to that of a hook
    in full backup ball

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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