What is the meaning of Walk-in?

A facility or room which may be walked into:

1. A relatively small room (such as a closet or pantry) or refrigerator or freezer that is spacious enough to walk into.
2. A relatively larger room or (especially) an apartment that is entered directly, not via an intervening passage or lobby.

   A relatively small room (such as a closet or pantry) or refrigerator or freezer that is spacious enough to walk into.

   A relatively larger room or (especially) an apartment that is entered directly, not via an intervening passage or lobby.

   A facility or an event that principally handles customers who do not have an appointment.

   A facility accessed on foot rather than by car, usually contrasted to drive-in.

   Someone who walks in (to a place, etc):

   1. A customer, job applicant or similar who visits a restaurant, medical facility, car dealership, etc. without a reservation, appointment, or referral.
   2. A defector (or similar) who walks into an embassy (etc) unannounced.

   A customer, job applicant or similar who visits a restaurant, medical facility, car dealership, etc. without a reservation, appointment, or referral.

   A defector (or similar) who walks into an embassy (etc) unannounced.

   A demonstration or protest in which the participants assemble outside a facility, gain media exposure, and enter the facility in unison.

   A person whose original soul has departed the body and been replaced with another.

   A headmate (fictive, factive, or neither) who shows up in a system fully formed.

   That may be walked into:

   1. That people may enter without a prior appointment.
   2. Accessed by walking, either exclusively, as a campground, or together with drive-in access, as at some drive-in movie theaters.
   3. Spacious enough to walk into.
   4. Designed to be possible to walk into (without stepping over a ledge, etc).

      That people may enter without a prior appointment.

      Accessed by walking, either exclusively, as a campground, or together with drive-in access, as at some drive-in movie theaters.

      Spacious enough to walk into.

      Designed to be possible to walk into (without stepping over a ledge, etc).

      Gaining access through unlocked doors.

      Source: wiktionary.org