walk-up

Etymology
Deverbal from walk up; imitative of the bird's call.

Adjective

 * 1)  Reached by stairs rather than an elevator.
 * 2)  Containing such flats.
 * 3)  For which no appointment is necessary.

Noun

 * 1)  An apartment or block with stairs rather than an elevator.
 * 2)  An informal visit to a control tower by a pilot, typically used as part of pilot training.
 * 3) A mountain that can be climbed without specialist equipment.
 * 4) A customer who arrives without a reservation; a walk-in.
 * 5) An indoor or outdoor stand where food is sold to the public.
 * , northern flicker.
 * 1) A customer who arrives without a reservation; a walk-in.
 * 2) An indoor or outdoor stand where food is sold to the public.
 * , northern flicker.
 * 1) An indoor or outdoor stand where food is sold to the public.
 * , northern flicker.
 * , northern flicker.