plumb
noun
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.
has been plumbing
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present perfect progressiveof plumb (3rd person singular).present perfect progressive
Used to describe an action that began in the past, has continued continuously, and is still in progress.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The rupee, which has been plumbing new lows against the dollar in part because of tariff concerns, stood at 89.87 to the dollar after the decision.
From The Wall Street Journal ● Dec. 5, 2025
Loudon Wainwright III has been plumbing his personal relationships and dysfunctions for decades in his music.
From Slate ● Nov. 10, 2017
