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caulk

American  
[kawk] / kɔk /
Or calk

verb (used with object)

caulks, present (3rd person singular) caulked, past participle, past caulking present participle
  1. to fill or close seams or crevices of (a tank, window, etc.) in order to make watertight, airtight, etc.

  2. to make (a vessel) watertight by filling the seams between the planks with oakum or other material driven snug.

  3. to fill or close (a seam, joint, etc.), as in a boat.

  4. to drive the edges of (plating) together to prevent leakage.


noun

  1. Also caulking a material or substance used for caulking.

caulk British  
/ kɔːk /

verb

  1. to stop up (cracks, crevices, etc) with a filler

  2. nautical to pack (the seams) between the planks of the bottom of (a vessel) with waterproof material to prevent leakage

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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Etymology

Origin of caulk

First recorded in 1350–1400; from Latin calcāre “to trample, tread on” (verb derivative of calx “heel”), conflated with Middle English cauken, from Old French cauquer “to trample,” from Latin calcāre, as above

Explanation

Caulk is a sealant. It comes in a tube and is used commonly by plumbers and carpenters trying to seal up cracks where air or water might push through. When a plumber caulks a tub, he's applying caulk to its seams to make it watertight. Caulk can be used to describe both the process of applying caulk and the sealant itself. The word caulk comes from the Old Northern French cauquer, meaning "to press down." After you lay the caulk down over the seam you press it down by either running your finger over it or using a specific tool to force the caulk to settle into the hole you're trying to cover.

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Vocabulary lists containing caulk

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.

Caulk, putty and other sealants are great for such cracks.

From Seattle Times • Aug. 3, 2023

The Lexington Herald-Leader reports the mother of the student filed the lawsuit Thursday against para-educator Noel Ball, Fayette Superintendent Manny Caulk and officials at Crawford Middle School.

From Washington Times • Aug. 23, 2019

“We understand there were some complaints in connection with one subcontractor on the restoration of Ravinia Apartments, and to our knowledge those complaints have been resolved,” Steve Caulk, an Interstate spokesman, wrote in an email.

From Salon • Aug. 25, 2018

Carl Caulk, the acting assistant director for judicial security for the United States Marshals Service, said that Mr. Bergrin’s trial presented unusual challenges.

From New York Times • Oct. 11, 2011

Caulk, Calk, kawk, v.t. to press oakum and untwisted rope into the seams of a ship to render it watertight.—ns.

From Chambers's Twentieth Century Dictionary (part 1 of 4: A-D) by Various

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