There are multiple definitions - click on the translation that matches your context.

Buchung

Substantiv

full

reservation

noun

Definitions of reservation

English

an area of land kept for a particular group of people to live in, especially an area of land in the US kept for Native Americans

California has approved a measure legalising Las Vegas-style gambling on Native American reservations.

English

an area of land where wild animals are protected and can live without being hunted (also: reserve)

The new wildlife reservation will cover an area equivalent to the size of 100 football pitches.

English

an arrangement to have something such as a hotel room or a table in a restaurant kept for you to use

Do you have a reservation?