Pronunciation: (wôk'thrOO"), [key]
1. Theat., Television.
a. a rehearsal in which physical action is combined with reading the lines of a play.
b. a perfunctory performance of a script.
2. Television, Motion Pictures.a rehearsal without cameras.
3. a step-by-step demonstration of a procedure or process or a step-by-step explanation of it as a novice attempts it.
4. a pedestrian passageway or arcade through the ground floor of a building connecting one street or building with another.
1. designed to be walked through by an observer: The zoo has a walk-through aviary where the birds are all around you.
2. activated by a person passing through: a walk-through electronic scanner at the airport for detecting concealed weapons.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.