Pronunciation Adjective


  1. Truly vertical, as indicated by a plumb line.
  2. (cricket) Describing an LBW where the batsman is hit on the pads directly in front of his wicket and should be given out.
Synonyms Adverb

plumb (not comparable)

  1. In a vertical direction; perpendicularly.
    • 1667, John Milton, Paradise Lost
      Plumb down he drops.
  2. (informal) Squarely, directly; completely.
    It hit him plumb in the middle of his face.
    Years ago the well plumb dried out, not a drop of water in there since.

plumb (plural plumbs)

  1. A little mass of lead, or the like, attached to a line, and used by builders, etc., to indicate a vertical direction.
  2. (nautical) A weight on the end of a long line, used by sailors to determine the depth of water.
  3. The perpendicular direction or position.
Synonyms Verb

plumb (plumbs, present participle plumbing; past and past participle plumbed)

  1. To determine the depth, generally of a liquid; to sound.
  2. To attach to a water supply and drain.
  3. (transitive, figurative) To think about or explore in depth, to get to the bottom of, especially to plumb the depths of.
  4. To use a plumb bob as a measuring or aligning tool.
  5. To accurately align vertically or horizontally.
  6. (dated) To seal something with lead.
  7. (intransitive) To work as a plumber.
  8. (rare) To fall or sink like a plummet.
  9. (US, colloquial, figuratively, obsolete) To trace a road or track; to follow it to its end.
  10. (nautical) To position vertically above or below.
  • Italian: appiombare

plumb (plural plumbs)

  1. Obsolete form of plum#English|plum (“the fruit”).
    • 1767, Select Essays on Husbandry
      Without attending to sub-divisions, all the pears are of one species, as well as all the apples, plumbs, peaches, cherries, lemons, citrons, oranges […]

Proper noun
  1. Surname

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