backup

Meanings

• an accumulation caused by clogging or a stoppage
  • "a traffic backup on the main street"
  • "he discovered a backup in the toilet"
• someone who takes the place of another (as when things get dangerous or difficult)
• a musical part (vocal or instrumental) that supports or provides background for other musical parts
• (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"
• the act of providing approval and support

Synonyms

accompaniment, backing, backup man, championship, computer backup, fill-in, musical accompaniment, patronage, relief, reliever, stand-in, substitute, support