Pronunciation: (wôk'up"), [key]
1. an apartment above the ground floor in a building that has no elevator.
2. a building, esp. an apartment house, that has no elevator.
1. located above the ground floor in a building that has no elevator.
2. having no elevator.
3. accessible to pedestrians from the outside of a building: a walk-up teller's window at a bank.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.