Definition of backups:
(n) :
(computing) A 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.
(n) :
A reserve or substitute.
(n) :
Any support or extra help.
(n) :
(law enforcement) Reinforcements.
(n) :
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.
(adj) :
Standby, reserve or extra.