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check someone or something through (something)
to allow one to pass through something after checking one's identification, tickets, passes, etc. (Fixed order.) The guard checked us through the gate, and we went about our business. We checked them through security.
check through something
to examine something or a collection of things. (Usually refers to papers or written work, or to details in the paperwork.) Check through this and look for missing pages. I'll check through it for typographical errors also.
1. To examine something or a group of things: I checked through the drawer to see if I had left my keys there.
2. To allow someone to pass through some place after examining tickets, papers, or passes: The security guards checked us through the gate.
3. To have someone's travel be arranged so that the traveller may present a ticket or check in only at the beginning of a journey and not at each leg: You don't need to go to the ticket counter when you change planes; we already checked you through.
4. To have something, especially luggage, sent along each leg of a journey to some destination, without requiring that a person pick it up and check it again at each leg of the journey, as when changing airplanes, trains, or buses: You should check your luggage through, or else you'll have to carry your bags with you in the airport.