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variants or calk
caulked or calked; caulking or calking; caulks or calks

transitive verb

: to stop up and make tight against leakage (something, such as a boat or its seams, the cracks in a window frame, or the joints of a pipe)
caulker noun


2 of 3

noun (1)

variants or calk or less commonly caulking or calking
: material used to caulk


3 of 3

noun (2)

variant spelling of calk entry 2, calk entry 3

: a cleat on the shoe of a horse to prevent slipping
also : a similar device worn on the sole of a shoe

Examples of caulk in a Sentence

Verb He carefully caulked the area around the windows.
Recent Examples on the Web
Seal air leaks around windows and doors by caulking, weatherstripping or adjusting hardware to create a better seal. Shaun Goodwin, Idaho Statesman, 3 Apr. 2024 This tool can be used with 10-ounce caulking tubes. Nor'adila Hepburn, Better Homes & Gardens, 28 Mar. 2024 One of the first collections devoted to caulking guns and wrenches opened in Berkeley, Calif., in 1979, The Washington Post previously reported. Olivia Diaz, Washington Post, 17 Feb. 2024 Securing and caulking the baseboards helps prevent dust and grime from entering the former garage space. Jessica Bennett, Better Homes & Gardens, 21 Jan. 2024 PCBs, which were banned from production in 1979 due to their toxicity, were commonly used in caulking, light fixtures and other parts of buildings from the 1950s to 1970s, according to Massachusetts' Bureau of Climate and Environmental Health. Aimee Picchi, CBS News, 19 Dec. 2023 Around windows and in places where there’s not enough room for drywall, caulking can help. Gabe Bullard, Washington Post, 2 Nov. 2023 The men were engaged as ship caulkers, the backbone of the ship caulking trade industry in the 19th century. Jacques Kelly, Baltimore Sun, 16 Sep. 2023 Winter will be here soon, so learn how to caulk, weather strip and insulate the correct way. cleveland, 8 Sep. 2023
Caulk Type: The best caulk guns work with a variety of caulk types, including acrylic latex, silicone, or hybrid caulks that combine acrylic latex with silicone. Nor'adila Hepburn, Better Homes & Gardens, 28 Mar. 2024 Two of the cars that derailed had been holding nearly 386,000 pounds of acrylates, strong-smelling, highly irritating chemicals that are used to make paints, coatings, caulks and sealants. Brenda Goodman, CNN, 9 Mar. 2024 The community’s builders are committed to energy efficiency, incorporating materials like a whole-house wrap, a foam and caulk package and low-E double-pane windows to create draft-free homes with lower utility costs. Kansas City Star, 24 Jan. 2024 Check for gaps around doors and windows, and seal them with caulk. Kate Morgan, Washington Post, 21 Nov. 2023 Most logger boots no longer have spikes (which are properly called caulks). Bob Beacham, Field & Stream, 25 Oct. 2023 Use a clear caulk that’s labeled as paintable, such as Dap’s alex plus clear acrylic caulk with silicone ($4.28 a tube at Home Depot). Jeanne Huber, Washington Post, 13 Oct. 2023 Add caulk or weatherstripping around drafty doors and windows, and seal holes or cracks hidden in attics, basements and crawlspaces with caulk, spray foam or weatherstripping. oregonlive, 10 July 2022 For holes less than an inch in size, stainless steel, copper mesh or caulk will work. Rachel Kurzius, Washington Post, 12 July 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'caulk.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History



Middle English caulken, from Anglo-French cauker, calcher, chalcher to trample, from Latin calcare, from calc-, calx heel

First Known Use


15th century, in the meaning defined above

Noun (1)

1954, in the meaning defined above

Time Traveler
The first known use of caulk was in the 15th century

Dictionary Entries Near caulk

Cite this Entry

“Caulk.” Dictionary, Merriam-Webster, Accessed 18 Apr. 2024.

Kids Definition


variants or calk
: to fill up a crack, seam, or joint so as to make it watertight
caulker noun

More from Merriam-Webster on caulk

Last Updated: - Updated example sentences
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