reserve

Reserve is defined as to save or secure, particularly for future use.

(verb)

An example of to reserve is to call a restaurant and ask them to hold a table for you.

The definition of a reserve is something kept or stored if needed.

(noun)

An example of reserve is a money reserve which means cash stored away in case of an emergency.

Reserve means relating to being stored.

(adjective)

An example of reserve used as an adjective is a reserve fund which means money being held for future use.

See reserve in Webster's New World College Dictionary

transitive verb reserved, reserving

to keep back, store up, or set apart for later use or for some special purpose
to hold over to a later time
to set aside or have set aside for a special person, etc.: to reserve a theater seat
to keep back or retain for oneself: to reserve the right to refuse

Origin: ME reserven < OFr reserver < L reservare < re-, back + servare: see observe

noun

something kept back or stored up, as for later use or for a special purpose
a limitation or reservation: now rare except in (see phrase below)
the practice of keeping one's thoughts, feelings, etc. to oneself; self-restraint or aloofness in speech and manner
reticence; silence
restraint and control in artistic expression; freedom from exaggeration or extravagance
1. available participants kept out of action for use in an emergency or for replacing active groups or units, as in sports or warfare
2. personnel or units in the armed forces not on active duty but subject to call; militia: with the
cash, or assets readily turned into cash, held out of use by a bank, insurance company, or business to meet expected or unexpected demands
☆ land set apart for a special purpose: a forest reserve

adjective

being, or having the nature of, a reserve or reserves: a reserve supply

See reserve in American Heritage Dictionary 4

transitive verb re·served, re·serv·ing, re·serves

To keep back, as for future use or for a special purpose.
To set or cause to be set apart for a particular person or use. See Synonyms at book.
To keep or secure for oneself; retain: I reserve the right to disagree. See Synonyms at keep.

noun

Something kept back or saved for future use or a special purpose.
The act of reserving.
The keeping of one's feelings, thoughts, or affairs to oneself.
Self-restraint in expression; reticence: “One feels it everywhere, a quality of reserve, something held back” (Rollene W. Saal).
Lack of enthusiasm; skeptical caution.
An amount of capital held back from investment in order to meet probable or possible demands.
A reservation of public land: a forest reserve.
An amount of a mineral, fossil fuel, or other resource known to exist in a particular location and to be exploitable: the discovery of large oil reserves.
a. A fighting force kept uncommitted until strategic need arises. Often used in the plural.
b. The part of a country's armed forces not on active duty but subject to call in an emergency.