n.
1.a thorough explanation (usually accompanied by a demonstration) of each step in a procedure or process
2.a pedestrian passageway through the ground floor of a building
3.a first perfunctory rehearsal of a theatrical production in which actors read their lines from the script and move as directed
4.the act of walking in order to view something
Idiom of the Day
lay off (something) or lay (something) off
to stop using or taking something bad (alcohol or drugs or chocolate or cigarettes)
I was told by my doctor to lay off smoking or I will be sick in the future.