The meaning of PLUMB is a lead weight attached to a line and used to indicate a vertical direction. How to use plumb in a sentence.

plumb verb [T] (DEEP) engineering specialized to measure how deep something is, especially water to understand or discover all about something:

1. (Building) a weight, usually of lead, suspended at the end of a line and used to determine water depth or verticality 2. (Building) the perpendicular position of a freely suspended plumb line …

Plumb is used to give emphasis to an adjective or verb that describes a feeling or condition.

Plumb definition: a small mass of lead or other heavy material, as that suspended by a line and used to measure the depth of water or to ascertain a vertical line.. See examples of PLUMB …

Nov 2, 2025 · plumb (third-person singular simple present plumbs, present participle plumbing, simple past and past participle plumbed) To determine the depth, generally of a liquid; to sound.

Sep 24, 2024 · In construction or carpentry, the term plumb refers to a line or feature that is perfectly vertical. In technical design, it represents an imaginary line that runs straight to the …

plumb /plʌm/ n. [countable] Building, Surveying a small mass of lead hung on a line and used to measure the depth of water or to make sure a line is straight up and down.

There are nine meanings listed in OED's entry for the word plumb, two of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

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