plumb /ˈplʌm/
 鉛錘,垂直(a.)垂直的(vt.)使垂直,用鉛封,探測,瞭解(vi.)垂直


 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.

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 plumb
      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:
              clean, plum]
      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