i think i am with wordwind on plumb (as in lead, the metal) a person who is plumb crazy is so crazy you can't plumb the depth...

plumb, from plumbum, the latin for lead, also gives us plumber..though, now days, not even waste pipes are made with lead.. a plumb, or sometime a plumb bob, a small lead weight, used to measure the depth of lake, or to drop a perfect vertical line.


my other obsession