\ ˈjȯist How to pronounce joist (audio) \

Definition of joist

: any of the small timbers or metal beams ranged parallel from wall to wall in a structure to support a floor or ceiling

Illustration of joist

Illustration of joist

J joist

Examples of joist in a Sentence

Recent Examples on the Web On a recent visit, Rao and his colleagues selected twenty-eight joist samples. Rivka Galchen, The New Yorker, 6 May 2022 Inside, the ceiling was lowered to 9 feet to accommodate a new attic joist and firewall while offering a way for more efficient heating and cooling. Mary Colurso |, al, 16 Apr. 2022 The hardware must be secured into a ceiling joist for proper support. Jessica Bennett, Better Homes & Gardens, 18 Feb. 2022 Davis, Brody’s load-bearing masonry walls spalled; wood joist floors sagged. New York Times, 4 Feb. 2022 Police also learned Hudson bought 32 rolls of joist tape confirmed to have been used on Hudson's home exterior deck, according to the affidavit. Tracy Neal, Arkansas Online, 18 Dec. 2021 Cut rigid foam insulation to fit against the joist, filling any gaps wider than 1/4 inch with expanding foam. Maria V. Charbonneaux, Better Homes & Gardens, 10 Dec. 2021 Run piping from the backflow preventer to the pipe installed through the rim joist. Merle Henkenius, Popular Mechanics, 25 June 2021 This project is heavy, so attach it to a heavy-duty hook in a ceiling joist for hanging. Beth Eslinger, Better Homes & Gardens, 15 July 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'joist.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of joist

15th century, in the meaning defined above

History and Etymology for joist

Middle English giste, joiste, from Anglo-French giste, from Vulgar Latin *jacitum, from Latin jacēre to lie — more at adjacent

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Time Traveler for joist

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The first known use of joist was in the 15th century

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Last Updated

15 May 2022

Cite this Entry

“Joist.” Dictionary, Merriam-Webster, Accessed 28 May. 2022.

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More Definitions for joist


\ ˈjȯist How to pronounce joist (audio) \

Kids Definition of joist

: any of the small timbers or metal beams laid crosswise in a building to support a floor or ceiling

More from Merriam-Webster on joist

Nglish: Translation of joist for Spanish Speakers Encyclopedia article about joist


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