1.Definition: (medicine) potential capacity to respond in order to maintain vital functions

Category: General

2.Definition: a district that is reserved for particular purpose

Related Noun(s):reservation

Category: Places

3.Definition: an athlete who plays only when a starter on the team is replaced

Related Noun(s):substitute

Category: People

4.Definition: armed forces that are not on active duty but can be called in an emergency

Category: General

5.Definition: formality and propriety of manner

Related Noun(s):modesty

Category: General

6.Definition: something kept back or saved for future use or a special purpose

Related Noun(s):backlog, stockpile

Category: General

7.Definition: the trait of being uncommunicative; not volunteering anything more than necessary

Related Noun(s):reticence, taciturnity

Category: General