I. ˈ ̷ ̷ˌ ̷ ̷ adjective
Etymology: from the phrase walk up
1. : located above the ground floor in a building with no elevator
a walk-up apartment
2. : consisting of several stories and having no elevator
no walk-up tenement, unless fireproof, should exceed six stories in height — J.G.Hill
II. noun
( -s )
1. : a building of several stories with no elevator ; especially : a walk-up apartment house
lived on the top floor of a five-flight walk-up — Viña Delmar
2.
a. : an apartment located above the ground floor in a building with no elevator
his apartment, a one-room walk-up — Truman Capote
b. : a place of business reached by walking up one or more flights of stairs
3. : a trapshooting game in which several traps are hidden at intervals on either side of a path along which the shooter is to walk and each trap is sprung without warning as the shooter approaches it
III. adjective
: designed to allow pedestrians to be served without entering a building
the walk-up window of a bank