Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

check in

verb

Definition of check in

  1. intransitive verb
  2. 1 :  to register at a hotel

  3. 2 :  to report one's presence or arrival <check in at a convention>

  4. transitive verb
  5. :  to satisfy all requirements in returning <check in the equipment after using>



1918

First Known Use of check in

1918



Seen and Heard

What made you want to look up check in? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a smart aleck

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

prompt angry oily maudlin
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ