gasket
Americannoun
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a rubber, metal, or rope ring, for packing a piston or placing around a joint to make it watertight.
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Nautical. any of a number of light lines for securing a furled sail to a boom, gaff, or yard.
noun
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a compressible packing piece of paper, rubber, asbestos, etc, sandwiched between the faces or flanges of a joint to provide a seal
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nautical a piece of line used as a sail stop
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slang to burst out in anger
Etymology
Origin of gasket
1615–25; perhaps < French garcette a plait of rope
Explanation
A piece of rubber that's used to fill the bit of space between two parts of an engine is called a gasket. If your car has an oil leak, with any luck you'll just need to replace a gasket. The job of a gasket is to prevent leaks and form a seal between two surfaces, usually the parts of a machine or system. Plumbing requires gaskets to prevent water seeping between pipes and fittings, and your car relies on its head gasket, which sits between the cylinder head and engine block, to keep it running. Colloquially, to "blow a gasket" means to get furious or extremely upset.
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.
On the Alto K98M, that click-clackiness is muffled by a rubbery internal gasket surrounding the keys.
From The Wall Street Journal • Nov. 23, 2025
Another was out of service due to a blown head gasket.
From Los Angeles Times • Jul. 30, 2024
While the flooring contractor’s intentions may have been good, he broke the all-important toilet gasket seal and buried the toilet flange with the new laminate flooring.
From Seattle Times • Feb. 27, 2023
"I'm satisfied that my wife and kids do not experience all the emotional turmoil that we experience here. We are like a gasket that blocks all the hard times that the war brings," he says.
From BBC • Nov. 14, 2022
But Dr. Roland had now begun an informative lecture concerning the care and function of the manifold gasket.
From "The Secret History" by Donna Tartt
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
