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.
is plumbing
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present progressiveof plumb (3rd person singular).present progressive
Used to describe an ongoing action or state that is currently taking place in the immediate present.
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.
Deep within the grey matter is plumbing called the glymphatic system.
From BBC ● Jul. 19, 2026
U.S. unemployment is plumbing its lowest level in half a century, wages are ticking up but the Federal Reserve, meeting on Tuesday and Wednesday, is not poised to snatch away the proverbial punch bowl.
From Reuters ● Mar. 15, 2019
Painful lesson: A new generation of students is plumbing a shameful past with USC's first-ever history course on the Japanese American internment, the constitutional issues raised and the relevance today amid the war on terror.
From Los Angeles Times ● Feb. 20, 2018
The value of the peso has fallen 13 percent since the election and is plumbing historic lows against the dollar.
From Washington Post ● Jan. 27, 2017
"You always know all about everybody and me in particular, Guy, but though, as you're aware, I'm a profound materialist——" "Maurice is plumbing the lead to-night," Hazlewood interrupted, with a laugh.
From Sinister Street, vol. 2 by Compton MacKenzie
