D defs.my
Entry 1 sense Webster, 1913

check-in

/(chĕk"ĭn)/ · check·-in · IPA
01 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…
  1. 1.
    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.