usage: 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"
2. walk-through, passageway
usage: a pedestrian passageway through the ground floor of a building
3. walk-through, rehearsal, dry run
usage: a first perfunctory rehearsal of a theatrical production in which actors read their lines from the script and move as directed
4. walk-through, walk
usage: the act of walking in order to view something; "the realtor took her on a walk-through of the apartment"
Verb
1. walk through, rehearse, practise, practice
usage: perform in a perfunctory way, as for a first rehearsal