the trait of being uncommunicative; not volunteering anything more than necessary
something kept back or saved for future use or a special purpose
(medicine) 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"
hold back or set aside, especially for future use or contingency; "they held back their applause in anticipation"
arrange for and reserve (something for someone else) in advance; "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"