Plumb 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.
Plumb bob. See Bob, 4.
Plumb joint, in sheet-metal work, a lap joint, fastened by solder.
Plumb level. See under Level.
Plumb line. (a) The cord by which a plumb bob is suspended; a plummet. (b) A line directed to the center of gravity of the earth.
Plumb rule, a narrow board with a plumb line, used by builders and carpenters.
Plumb, a. Perpendicular; vertical; conforming the direction of a line attached to a plumb; as, the wall is plumb.
Plumb, adv. In a plumb direction; perpendicularly. “Plumb down he falls.”
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.
adj : exactly vertical; "the tower of Pisa is far out of plumb"
n : the metal bob of a plumb line [syn: plumb bob, plummet]
adv 1: completely; used as intensifiers; "clean forgot the
appointment"; "I'm plumb (or plum) tuckered out" [syn:
2: conforming to the direction of a plumb line
3: exactly; "fell plumb in the middle of the puddle" [syn: plum]
v 1: measure the depth of something
2: weight with lead
3: examine thoroughly and in great depth
4: adjust with a plumb line so as to make vertical