sleeve
Americannoun
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the part of a garment that covers the arm, varying in form and length but commonly tubular.
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a protective container, usually thin and flexible with an opening on one side for insertion or removal of an item, as a paper storage envelope for a phonograph record, or a padded case for a tablet or other electronic device: a 24-sleeve CD wallet.
a form-fitting laptop sleeve;
a 24-sleeve CD wallet.
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a pliable tubular or rectangular container for crackers, cookies, and the like that is typically opened at one end to remove individual servings: The largest box has four sleeves of saltines inside.
I ate a whole sleeve of shortbreads before I realized how many calories that is!
The largest box has four sleeves of saltines inside.
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Machinery. a tubular piece, as of metal, fitting over a rod or the like.
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a pattern of tattoos that covers the arm from shoulder to wrist in one integrated piece of tattoo art.
I got my first tattoo when I turned 18, and by 28 I had full sleeves on both arms.
verb (used with object)
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to furnish with sleeves.
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Machinery. to fit with a sleeve; join or fasten by means of a sleeve.
idioms
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have something up one's sleeve, to have a secret plan, scheme, opinion, or the like.
I could tell by her sly look that she had something up her sleeve.
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laugh up / in one's sleeve, to be secretly amused or contemptuous; laugh inwardly.
to laugh up one's sleeve at someone's affectations.
noun
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the part of a garment covering the arm
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a tubular piece that is forced or shrunk into a cylindrical bore to reduce the diameter of the bore or to line it with a different material; liner
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a tube fitted externally over two cylindrical parts in order to join them; bush
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US name: jacket. a flat cardboard or plastic container to protect a gramophone record
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to prepare oneself for work, a fight, etc
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secretly ready
verb
Other Word Forms
Etymology
Origin of sleeve
First recorded before 950; Middle English sleve, slieve, Old English slēfe (Anglian), slīefe; akin to Dutch sloof “apron”
Explanation
The part of your clothing that covers your arm (or part of your arm) is a sleeve. Some t-shirts have long sleeves, others have short sleeves, and your tank top doesn't have any sleeves at all. On a hot day, you might roll up the sleeves of your shirt, or you might change into one with short sleeves (or no sleeves at all, also known as sleeveless). Another kind of sleeve is a container or protective covering, like a record sleeve or a sleeve of crackers. If you have something "up your sleeve," it means you're hiding something to use later in a surprising way.
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.
The rock remained attached to the fixed sleeve surrounding the spinning drill bit.
From Science Daily • May 11, 2026
Put a Davey Lopes patch on the sleeve.
From Los Angeles Times • Apr. 25, 2026
We note how the small scale, finely drawn swirls of her sleeve are challenged by the suave oval of her face and the emphatic line of her shoulder.
From The Wall Street Journal • Apr. 17, 2026
"I know what I did isn't the best way of me doing things, but I wear my heart on my sleeve," MacIntyre told Sky Sports.
From BBC • Apr. 17, 2026
I wiped my nose on the sleeve of my sad checkered dress and took a deep breath, trying mightily to get ahold of myself.
From "The Detective's Assistant" by Kate Hannigan
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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.