reserve
/ri-ˈzərv/
verb
to set aside (part of the consecrated elements) at the Eucharist for future use
to retain or hold over to a future time or place : defer
reserve grain for seed
noun
something reserved or set aside for a particular purpose, use, or reason: such as
a military force withheld from action for later decisive use —usually used in plural
forces not in the field but available
noun
a central bank holding reserves of other banks