Definition of walk-through (noun)
- a thorough explanation (usually accompanied by a demonstration) of each step in a procedure or process
- "she gave me a walk-through of my new duties"
- a pedestrian passageway through the ground floor of a building
- a first perfunctory rehearsal of a theatrical production in which actors read their lines from the script and move as directed
- the act of walking in order to view something
- "the realtor took her on a walk-through of the apartment"
Source: Princeton University Wordnet