Plumb
Webster's Dictionary [1]
(1): ( n.) A little mass or weight of lead, or the like, attached to a line, and used by builders, etc., to indicate a vertical direction; a plummet; a plumb bob. See Plumb line, below.
(2): ( a.) Perpendicular; vertical; conforming the direction of a line attached to a plumb; as, the wall is plumb.
(3): ( adv.) In a plumb direction; perpendicularly.
(4): ( v. t.) 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.
(5): ( v. t.) To seal with lead; as, to plumb a drainpipe.
(6): ( v. t.) To adjust by a plumb line; to cause to be perpendicular; as, to plumb a building or a wall.
(7): ( v. t.) To supply, as a building, with a system of plumbing.
King James Dictionary [2]
Plumb, n. plum. L. plumbum, lead probably a clump or lump.
A mass of lead attached to a line, and used to ascertain a perpendicular position of buildings and the like. But the word as a noun is seldom used, except in composition. See Plumb-line.
Plumb, a. Perpendicular, that is, standing according to a plumb-line. The post of the house or the wall is plumb. This is the common language of our mechanics.
Plumb, adv. In a perpendicular direction in a line perpendicular to the plane of the horizon. The wall stands plumb.
Plumb down he falls.
1. Directly suddenly at once as a falling mass usually pronounced plump. He fell plumb into the water.
Plumb, To adjust by a plumb-line to set in a perpendicular direction as, to plumb a building or a wall.
1. To sound with a plummet, as the depth of water. Little used.
