Function: intransitive verb
Date: 1918
1 : to register at a hotel
2 : to report one's presence or arrival < check in at a convention>
transitive verb : to satisfy all requirements in returning < check in the equipment after using>
Function: intransitive verb
Date: 1918
1 : to register at a hotel
2 : to report one's presence or arrival < check in at a convention>
transitive verb : to satisfy all requirements in returning < check in the equipment after using>
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012