The act of reserving, or keeping back; reservation.(noun)
source: webster1913
That part of the assets of a bank or other financial institution specially kept in cash in a more or less liquid form as a reasonable provision for meeting all demands which may be made upon it;(noun)
source: webster1913
verb (v)
hold back or set aside, especially for future use or contingency(verb.possession)
source: wordnet30
give or assign a resource to a particular person or cause(verb.cognition)