cobweb
Americannoun
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a web spun by a spider to entrap its prey.
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a single thread spun by a spider.
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something resembling a cobweb; anything finespun, flimsy, or insubstantial.
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a network of plot or intrigue; an insidious snare.
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cobwebs, confusion, indistinctness, or lack of order.
I'm so tired my head is full of cobwebs.
verb (used with object)
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to cover with or as with cobwebs.
Spiders cobwebbed the cellar.
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to confuse or muddle.
Drunkenness cobwebbed his mind.
noun
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a web spun by certain spiders, esp those of the family Theridiidae, often found in the corners of disused rooms
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a single thread of such a web
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something like a cobweb, as in its flimsiness or ability to trap
Usage
What does cobweb mean? Cobweb is another word for a spider web. But cobweb is most commonly used to refer to the kind of dusty old spider webs that hang in the corners of places that haven’t been used or cleaned in a long time, like attics and abandoned houses. For that reason, cobweb is often used in expressions like clean out the cobwebs, meaning to do something to clear your mind or make it function normally again, perhaps after a period of inactivity or confusion. Cobweb can also be used as a verb, meaning to cover in cobwebs, as in No one had entered the study for years, and spiders had cobwebbed the entire bookcase. Example: The abandoned house was dusty and full of cobwebs.
Other Word Forms
Etymology
Origin of cobweb
1275–1325; Middle English coppeweb, derivative of Old English -coppe spider (in ātorcoppe poison spider); cognate with Middle Dutch koppe; see web
Explanation
A cobweb is the net of sticky threads that a spider weaves to catch insects. You can also call a cobweb a spider's web. A cobweb is any spider's web, although some people use it to specify the dense, tangled type of web that certain spiders weave, or to mean a dusty old web, like the ones you might see in your grandparents' attic. Cobweb can also describe some intricate or complicated things: "She got lost in the cobweb of unfamiliar subway lines in the city." It comes from the Old English coppeweb, from the now-obsolete coppe, "spider."
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.
Make a homemade spider toss game that transforms your living room floor into a huge cobweb.
From Salon • Oct. 30, 2025
And in Edward Crutchley’s treatise on queer culture and the Goth, with its crushed velvets slipping down the torso, hole-poked cobweb knits — and reading list.
From New York Times • Feb. 22, 2022
L.A. was once wetlands fed by the cobweb streams and marshes of the L.A.
From Los Angeles Times • Jun. 29, 2021
I take careful little sips as I fiddle with the app, making a messy cobweb of flavor notes – herbaceous, dry, mineral, astringent – guessing wildly at intensity levels.
From The Guardian • May 23, 2018
Bod reached out his hand and found himself touching fingers with, and gazing into the grey eyes of, the lady in the cobweb dress.
From "The Graveyard Book" by Neil Gaiman
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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.