Bedeutung von “check in” — Learner’s Dictionary

check in

phrasal verb with check us uk /tʃek/ verb
AIRPORT

B1 to go to the desk at an airport in order to say that you have arrived and to get the number of your seat:

We have to check in three hours before the flight leaves.
HOTEL

B1 to go to the desk at a hotel in order to say that you have arrived, and to get the key to your room

(Definition von “check in phrasal verb, verb” aus dem Cambridge Learner's Dictionary © Cambridge University Press)