The act of checking in at a hotel, airport etc(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "check-in" in a sentence
"Then I queued to leave my coat for 20 minutes [at the compulsory check-in]."
"Invite them to specifically ask what you have accomplished and what your plans for future action are during the check-in."
"Perhaps your room wasn't ready upon check-in, construction causing loss of sleep - you can always address a hotel issue with the management in a nice manner and see if they will do something like provide an upgrade for the inconvenience."