\ˈchek-ˌin \

Definition of check-in 

(Entry 1 of 2)

: an act or instance of checking in

check in


Definition of check in (Entry 2 of 2)

intransitive verb

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

Examples of check-in in a Sentence

Recent Examples on the Web: Verb

Maxwell adds that Everytown has helped pass 28 laws in the past five years preventing domestic abusers from obtaining guns, and instituted background checks in 20 states that previously had loopholes. Judith Ohikuare, Seventeen, "Activism Fatigue Is Real And Here's How You Can Fight Against It," 17 Oct. 2018 Put the check in a special place and enjoy the incredible power of this 28-day lunar cycle. Aliza Kelly Faragher, Allure, "What October's Virgo Horoscope Means for You," 30 Sep. 2018 After they are resettled, refugees continue to undergo security checks in the United States for five years or more. Susannah George, The Seattle Times, "US again slashing number of refugees it will accept," 17 Sep. 2018 Entry-level perks include priority check in, priority security lanes, free upgrades to Economy Plus seats, other upgrades depending on fare class, and a free checked bag on every flight. Ryan Craggs, Condé Nast Traveler, "The Best Frequent Flier and Airline Rewards Programs in the U.S.," 27 July 2018 The commission received the check in June, and during the presentation, the teens also brought examples of posters that fifth-graders made around sustainability themes. Deborah Kadin,, "'They were the rock stars': River Forest teens honored for boosting students' waste disposal practices," 10 July 2018 Division 3 champion Cohasset checks in at No. 4 following its state title run, followed by Division 2 runner-up Concord-Carlisle. Lacrosse BOYS No. Rec. Karl Capen,, "Franklin baseball No. 1," 30 June 2018 According to the sheriff's office, the complaint revealed between September and November 2017, Bentley wrote and cashed multiple checks in Clermont County on a closed account linked to Ryle High School., "Former Ryle teacher indicted for stealing $100K from school, student organization," 19 June 2018 This is not the first time researchers have found a way to bypass signature checks in third-party tools. Dan Goodin, Ars Technica, "For almost 11 years, hackers could easily bypass 3rd-party macOS signature checks," 12 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'check-in.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of check-in


1927, in the meaning defined above


1918, in the meaning defined at intransitive sense 1

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Statistics for check-in

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Time Traveler for check-in

The first known use of check-in was in 1918

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More Definitions for check-in



English Language Learners Definition of check-in

: the act or process of reporting that you have arrived at a hotel, an airport, etc. : the act or process of checking in; also : the time when people are allowed to check in

: the place where people go when they arrive at a hotel, airport, etc.

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More from Merriam-Webster on check-in

Rhyming Dictionary: Words that rhyme with check-in

Spanish Central: Translation of check-in

Britannica English: Translation of check-in for Arabic Speakers

Comments on check-in

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a knickknack or trinket

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