to set something aside and keep it for future use

give or assign a resource to a particular person or cause

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

the quality that makes someone refrain from sharing their thoughts or feelings with others

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

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

a tendency to keep one's thoughts, feelings, and personal affairs to oneself

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

a district that is reserved for particular purpose

(medicine) potential capacity to respond in order to maintain vital functions