check in

1. To announce or record one's own arrival at a hotel, airport etc.

   We got to the hotel last night and checked in at the front desk.

   einchecken

   регистри́роватьсяregistrírovatʹsja, зарегистри́роватьсяzaregistrírovatʹsja

   реєструва́тисяrejestruvátysja, зареєструва́тисяzarejestruvátysja

   announce one's arrival, e.g. at hotels or airports

2. To verify a person's information and record their arrival, such as at a hotel, airport, etc.

   The clerk checked us in at the front desk.

3. To contact another person in order to keep the other person informed of one's situation.

   Kelly has to check in with her parole officer today.

4. (transitive)To return (a book to a library, source code to a repository, etc.).

5. To visit in order to see how someone is doing.

   I just wanted to check in after your accident. How are you recovering?

6. (intransitive, slang)To enter solitary confinement at one's own request for protection from other prisoners.

7. (slang, transitive)To send somebody to solitary confinement; to make somebody be admitted to solitary confinement.

8. To integrate new revisions into the public or master version of a file in a version control system.

9. (Netherlands, intransitive)To tap on, to touch in, to tap in (to use a smartcard to start a public transport journey)

1. Where is the check-in counter?

   Де стійка реєстрації? — ChickenKiev

   ruГде стойка регистрации? — marafon

   deWo ist der Abfertigungsschalter? — Esperantostern

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2. We checked in to the hotel just before dinner time.

   Ми заселилися до готелю просто перед вечерею. — Ahha

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3. What time should I check in?

   О котрій годині я повинен вселитися в номер? — ChickenKiev

   ruВ какой момент мне нужно зарегистрироваться? — IvritLover

   deUm wie viel Uhr soll ich einchecken? — kaz71

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4. I'd like to check in.

   Я хотів би зареєструватися. — uaspeaker

   ruЯ бы хотел зарегистрироваться. — Hellerick

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5. I'll check in.

   Я зареєструюся. — deniko

   ruЯ зарегистрируюсь. — marafon

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irregular

• check offперевірити, перевірятиTo mark items on a list (with a checkmark or by crossing them out) that have been chosen for keeping or removal or that have been dealt with (for example, completed or verified as correct or satisfactory).
• check outперевірити, перевірятиTo record the departure or withdrawal of someone or something (such as guests, employees, books, etc.).
• check inзареєструватися, реєструватисяTo announce or record one's own arrival at a hotel, airport etc.
• check overперевірити, перевірятиTo read or inspect, looking for errors or problems.
• check intoперевірити, перевірятиTo formally announce one's arrival at a location or event (usually a hotel) to a proprietor or employee of that location or event in order to secure admission, accommodations, or other services.
• check upTo verify through brief investigation or revisit for assurance that there are no problems.
• check onTo personally verify that (someone or something) is safe, copacetic, appropriate or satisfactory.
• check throughTo permit someone to continue onward, e.g. through a security checkpoint, after verifying their identity, tickets, etc.