Dec 3, 2015 · vertical, perpendicular, plumb mean being at right angles to a base line. vertical suggests a line or direction rising straight upward toward a zenith.

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

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 …

Dec 11, 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.

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 /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.

What are the best plumbing businesses who specialize in drain repair?

Definition of plumb verb in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

1. In a vertical or perpendicular line. 2. Informal Directly; squarely: fell plumb in the middle of the puddle.