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
Other Word Forms
Noun Inflected Forms
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.
"If you remember, the reason the Challenger failed was a rubber gasket that got too cold," Simmons said.
From Science Daily • May 13, 2026
Hibs - hanging on brilliantly against the odds, heading everything clear, throwing bodies in the way of shots, blowing a gasket to protect their point in front of an electrified home and away crowd.
From BBC • Apr. 27, 2026
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
“Manny, my mama would blow every gasket in a fifty-mile radius.”
From "Dear Martin" by Nic Stone
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.
