noun
backup
A buildup caused by something blocking or slowing movement.
A blocked drain causes a backup of water in the basement.
Etymology
Back and up describe material accumulating behind an obstruction. The compound names that resulting buildup, whether it consists of water, vehicles, or work that cannot move onward.
More examples
- The accident created a long traffic backup.
- Several backups slowed deliveries during the morning.
- The pump stopped the backup before the water reached the doorway.
Forms
backup · backups
Similar words
- buildup
- Is broader and need not result from obstructed movement.
- congestion
- Emphasizes overcrowding or restricted flow rather than material backing up.