0 to give your bags to airport employees to be put on a plane for you, rather than carrying them on and off the plane yourself: --
Those who need to check in bags must be patient and prepared for security searches.
Will you be checking in any luggage, madam?
1 to leave a bag or case with an official when you arrive at an airport, so that you do not have to carry it onto the plane: --
Passengers will be allowed to check in one suitcase free of charge.
NYA ORD
European
May 10, 2021
DAGENS ORD
Shimmer
check sth in