/wawk"throoh'/ , n.
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.
adj.
5. designed to be walked through by an observer: The zoo has a walk-through aviary where the birds are all around you.
6. activated by a person passing through: a walk-through electronic scanner at the airport for detecting concealed weapons.
[ 1935-40; n., adj. use of v. phrase walk through ]