What is the meaning of reserve?

noun

• Formality and propriety of manner.
  • synonyms: modesty
• Something kept back or saved for future use or a special purpose.
  • synonyms: backlog, stockpile
• An athlete who plays only when a starter on the team is replaced.
  • synonyms: substitute, second-stringer
• Medicine) potential capacity to respond in order to maintain vital functions. (
• A district that is reserved for particular purpose.
  • synonyms: reservation
• Armed forces that are not on active duty but can be called in an emergency.
  • synonyms: military reserve
• The trait of being uncommunicative; not volunteering anything more than necessary.
  • synonyms: reticence, taciturnity

verb

• Hold back or set aside, especially for future use or contingency.
  • usage: "they held back their applause in anticipation"
• Give or assign a resource to a particular person or cause.
  • usage: "I will earmark this money for your research"; "She sets aside time for meditation every day"
  • synonyms: allow, appropriate, earmark, set aside
• Obtain or arrange (for oneself) in advance.
  • usage: "We managed to reserve a table at Maxim's"
• Arrange for and reserve (something for someone else) in advance.
  • usage: "reserve me a seat on a flight"; "The agent booked tickets to the show for the whole family"; "please hold a table at Maxim's"
  • synonyms: hold, book