gum
1 Americannoun
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any of various viscid, amorphous exudations from plants, hardening on exposure to air and soluble in or forming a viscid mass with water.
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any of various similar exudations, as resin.
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a preparation of such a substance, as for use in the arts or bookbinding.
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mucilage; glue.
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Philately. the adhesive by which a postage stamp is affixed.
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Informal. a rubber overshoe or boot.
verb (used with object)
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to smear, stiffen, or stick together with gum.
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to clog with or as if with some gummy substance.
verb (used without object)
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to exude or form gum.
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to become gummy.
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to become clogged with a gummy substance.
verb phrase
idioms
noun
verb (used with object)
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to masticate (food) with the gums instead of teeth.
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to shape or renew the teeth of (a saw), as by grinding.
idioms
idioms
noun
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any of various sticky substances that exude from certain plants, hardening on exposure to air and dissolving or forming viscous masses in water
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any of various products, such as adhesives, that are made from such exudates
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any sticky substance used as an adhesive; mucilage; glue
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short for kauri gum
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a gumdrop
verb
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to cover or become covered, clogged, or stiffened with or as if with gum
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(tr) to stick together or in place with gum
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(intr) to emit or form gum
abbreviation
noun
noun
Other Word Forms
Etymology
Origin of gum1
First recorded in 1350–1400; Middle English gom(m)e, gum(m)e, from Old French gomme, from Vulgar Latin gumma, for Latin gummi, cummi, commi, from Greek kómmi, from Coptic kommi, from Egyptian kema, kemai, kmjt
Origin of gum2
First recorded in 1275–1325; Middle English gom(m)e, Old English gōma “palate, jaws (in plural),” Old Norse gōmr “roof or floor of the mouth,” German Gaumen “palate”
Origin of gum3
First recorded in 1825–35; euphemism for God
Explanation
Gum is a sticky substance that oozes out of a tree or another plant, and chewing gum is the stuff you blow bubbles with or stick under your desk. Yuck. Natural gum has many uses, including as a thickener in food products. Chewing gum, however, has only one real use: it's made to be chewed but not swallowed. This kind of gum often has a fruity or minty flavor, and can sometimes be blown into bubbles. When you gum something up, you clog or block it — or you make it sticky. Completely different gums are the soft flesh inside your mouth where your teeth are rooted.
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.
Ohtani was later an accessory to Smith’s prank filling Yoshinobu Yamamoto’s hood with wrapped pieces of bubble gum.
From Los Angeles Times • May 15, 2026
NeeDohs fresh from the factory—in shapes including cubes, gum drops, strawberries and cats—are gone as soon as they hit store shelves.
From The Wall Street Journal • Apr. 28, 2026
The residues are sorted, ground and mixed with a maceration of gum arabic to facilitate ignition, and with clay to slow combustion.
From Barron's • Apr. 24, 2026
There is also potential for use in veterinary care, since gum disease in dogs and cats has similar underlying causes.
From Science Daily • Apr. 13, 2026
Her face scrunched up like a wad of bubble gum.
From "Sir Fig Newton and the Science of Persistence" by Sonja Thomas
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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.