I think it's clapboards, but pronounced "Klabbards."
From: Jean Womack [mailto:firstname.lastname@example.org]
Sent: Wednesday, May 28, 2003 11:25 AM
To: ArtsEdNet Talk
Subject: Slave Arts Other Than Quilts
I recall seeing an exhibition which included bottle trees. Apparently the
deceased had a problem with alcohol. It didn't look like much - just bare
branches with bottles tied to it.
I think the overlapping boards you are referring to are called lap boards.
That's just a guess. There are interesting clues in architecture, like
ornaments over doors and under gables, bird houses, picket fences and so on.
Not just red lights.