reserve

give or assign a resource to a particular person or cause

potential capacity to respond in order to maintain vital functions

obtain or arrange (for oneself) in advance

“We managed to reserve a table at Maxim's”

something kept back or saved for future use or a special purpose

a district that is reserved for particular purpose

the trait of being uncommunicative; not volunteering anything more than necessary

armed forces that are not on active duty but can be called in an emergency

an athlete who plays only when a starter on the team is replaced

formality and propriety of manner

arrange for and reserve (something for someone else) in advance

“reserve me a seat on a flight”

hold back or set aside, especially for future use or contingency