I. ˈwȯk-ˌin adjective
Date: 1926
1. : large enough to be walked into
a walk-in closet
2. : arranged so as to be entered directly rather than through a lobby
a walk-in apartment
3.
a. : being a person who walks in without an appointment
a walk-in blood donor
b. : of, relating to, or intended for such persons
a walk-in clinic
II. ˈwȯk-ˌin noun
Date: 1944
1. : a walk-in refrigerator or cold storage room
2. : an easy election victory
3. : a person who walks in without an appointment