/ ˌrezəˈveɪʃn; NAmE -zərˈv-/ noun
1.
[ C ] an arrangement for a seat on a plane or train, a room in a hotel, etc. to be kept for you :
I'll call the restaurant and make a reservation .
We have a reservation in the name of Grant.
—compare booking
2.
[ C , U ] a feeling of doubt about a plan or an idea
SYN misgiving :
I have serious reservations about his ability to do the job.
They support the measures without reservation (= completely) .
3.
(also re·serve ) [ C ] an area of land in the US that is kept separate for Native Americans to live in
—see also central reservation
4.
[ U ] = reservation policy
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WORD ORIGIN
late Middle English (denoting the Pope's right of nomination to a benefice): from Old French , or from late Latin reservatio(n-) , from reservare keep backkeep back, from re- back + servare to keep.