PLUMB
Plumb, a.
Defn: Perpendicular; vertical; conforming the direction of a line attached to a plumb; as, the wall is plumb.
PLUMB
Plumb, adv.
Defn: In a plumb direction; perpendicularly. "Plumb down he falls."
Milton.
PLUMB
Plumb, v. t. [imp. & p. p. Plumbed; p. pr. & vb. n. Plumbing.]
1. To adjust by a plumb line; to cause to be perpendicular; as, to plumb a building or a wall.
2. To sound with a plumb or plummet, as the depth of water; hence, to examine by test; to ascertain the depth, quality, dimension, etc.; to sound; to fathom; to test. He did not attempt to plumb his intellect. Ld. Lytton.
3. To seal with lead; as, to plumb a drainpipe.
4. To supply, as a building, with a system of plumbing.
PLUMBAGE
Plumb"age, n.