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View synonyms for plumb line

plumb line

noun

  1. a cord with a lead bob attached to one end, used to determine perpendicularity, the depth of water, etc. Compare plumb ( def 1 ).


plumb line

noun

  1. a string with a metal weight at one end that, when suspended, points directly towards the earth's centre of gravity and so is used to determine verticality, the depth of water, etc
  2. another name for plumb rule


plumb line

/ plŭm /

  1. A line regarded as directed exactly toward the Earth's center of gravity.


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Word History and Origins

Origin of plumb line1

First recorded in 1530–40

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Example Sentences

They worked with simple plumb lines and slates for recording depths and satchels full of explosives for destroying obstacles.

When I took down the remaining wallpaper in preparation for new wallpaper, I came across all her notes, measurements and marks for plumb lines.

On either side of this isolated bar of sandstone a plumb-line might have been dropped straight to the level of the river.

Supports of dressed stone truly fixed with the plumb line are perfectly stable of themselves.

Dæd´alus is also mentioned as the inventor of the axe, plumb-line and augur.

Titiens then in a formal manner laid the first brick, using the plumb-line to ascertain that the work had been properly done.

He found a magnetic ridge line running approximately parallel to the line of no deflection of the plumb line.

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