IPA: /ˌrɛzərˈveɪʃən/
KK: /ˌrɛzərˈveɪʃən/
An arrangement made in advance to secure a place, such as a seat on a plane or a room in a hotel.
I made a reservation for two at the restaurant for tonight.
Reservation → It is formed from "reservare" (meaning to keep back or retain) and the suffix "-tion" (indicating the action or process). The word "reservation" refers to the action of keeping something back or setting it aside for a specific purpose.
Think of the idea of 'keeping back' something for later use — that's what a reservation means.