[walk-in] adj (1926) 1: large enough to be walked into "a ~ closet"
2: arranged so as to be entered directly rather than through a lobby "a ~ apartment" 3 a: being a person who walks in without an appointment "a ~ blood donor" b: of or relating to such persons "~ clinic"
[2]walk-in n (1944) 1: a walk-in refrigerator or cold storage room
2: an easy election victory
3: one who walks in without an appointment