A reserve or substitute.
reinforcements
A copy of a file or record, stored separately from the original, that can be used to recover the original if it is destroyed or damaged.
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.
Supporting, reinforcing; (music) of or related to accompaniment
Standby, reserve or extra.
That is intended as a backup.
The act of providing approval and support; backing; championship.
The act or state of being a customer of some business.
Customers collectively; clientele; business.
A communication that indicates lack of respect by patronizing the recipient; condescension; disdain.
The right of nomination to political office.
Granting favours or giving contracts or making appointments to office in return for political support.
The right of presentation to church or ecclesiastical benefice; advowson.
Guardianship, as of a saint; tutelary care.
To support by being a patron of.
To be a regular customer or client of; to patronize