1. Large enough to admit entrance: a walk-in closet.
2. Located so as to be entered directly from the street: a walk-in apartment.
1. A room large enough to admit entrance.
a. One who arrives for or wishes to get something, such as a service, without having an appointment or reservation.
b. One who defects to another country after walking into its embassy.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.