'check-in' definitions:

Definition of 'check-in'

(from WordNet)

noun

The act of reporting your presence (as at an airport or a hotel)

Definition of 'check-in'

From: GCIDE

check-in \check"-in\ (ch[e^]k"[i^]n), n. The act of registering as a guest at a hotel, inn, motel. etc; the act of checking in. Used also attributively, as the check-in counter at a hotel. [PJC]

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