Plumb Definition

plŭm
plumbed, plumbing, plumbs
noun
plumbs
A device consisting of a lead weight (plumb bob) hung at the end of a line (plumb line), used to determine how deep water is or whether a wall, etc. is vertical.
Webster's New World
A weight on the end of a line, used especially by masons and carpenters to establish a true vertical.
American Heritage
Synonyms:
adverb
In a vertical direction; straight down.
Webster's New World
Directly; squarely.
Fell plumb in the middle of the puddle.
American Heritage
Entirely; wholly; absolutely.
Plumb tired out.
Webster's New World
Plumb is defined as something done exactly or completely.
An example of plumb is when you sit right in front of the TV, or plumb in front of the TV.
YourDictionary
Synonyms:
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adjective
Perfectly vertical; straight down.
Webster's New World
Utter; absolute; sheer.
A plumb fool.
American Heritage

(cricket) Describing an LBW where the batsman is hit on the pads directly in front of his wicket and should be given out.

Wiktionary
Synonyms:
Antonyms:
verb
plumbed, plumbing, plumbs
To test or sound with a plumb.
Webster's New World
To test the verticality or alignment of with a plumb.
American Heritage
To discover the facts or contents of; fathom; solve; understand.
Webster's New World
To make vertical.
Webster's New World
To work as a plumber.
Webster's New World
Antonyms:
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prefix
(chemistry) Alternative form of plumbo-; used before a vowel.
Wiktionary
idiom
off
  • Not vertical.
American Heritage
out of plumb
  • not vertical
Webster's New World

Other Word Forms of Plumb

Noun

Singular:
plumb
Plural:
plumbs

Idioms, Phrasal Verbs Related to Plumb

  • off
  • out of plumb

Origin of Plumb

  • Middle English lead, a plumb from Old French plomb from Latin plumbum lead

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Old French *plombe, from Latin plumba (plural of plumbum).

    From Wiktionary

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