gum

¹ American  

[guhm] / gʌm /

noun

1. any of various viscid, amorphous exudations from plants, hardening on exposure to air and soluble in or forming a viscid mass with water.

2. any of various similar exudations, as resin.

3. a preparation of such a substance, as for use in the arts or bookbinding.

4. chewing gum.

5. mucilage; glue.

6. rubber.

7. gum tree.

8. Philately. the adhesive by which a postage stamp is affixed.

9. Informal. a rubber overshoe or boot.

---

verb (used with object)

gummed, gumming

1. to smear, stiffen, or stick together with gum.

2. to clog with or as if with some gummy substance.

verb (used without object)

gummed, gumming

1. to exude or form gum.

2. to become gummy.

3. to become clogged with a gummy substance.

verb phrase

1. gum up to spoil or ruin.

idioms

1. gum up the works. work.

gum ² American  

[guhm] / gʌm /

noun

1. Also called gingiva.  Often gums the firm, fleshy tissue covering the alveolar parts of either jaw and enveloping the necks of the teeth.

---

verb (used with object)

gummed, gumming

1. to masticate (food) with the gums instead of teeth.

2. to shape or renew the teeth of (a saw), as by grinding.

idioms

1. beat one's gums, to talk excessively or ineffectively.

gum ³ American  

[guhm] / gʌm /

idioms

1. by gum, (used as a mild oath).

---

gum ¹ British  

/ ɡʌm /

noun

1. any of various sticky substances that exude from certain plants, hardening on exposure to air and dissolving or forming viscous masses in water

2. any of various products, such as adhesives, that are made from such exudates

3. any sticky substance used as an adhesive; mucilage; glue

4. short for kauri gum

5. See chewing gum bubble gum gumtree

6. a gumdrop

---

verb

1. to cover or become covered, clogged, or stiffened with or as if with gum

2. (tr) to stick together or in place with gum

3. (intr) to emit or form gum

GUM ² British  

abbreviation

1. genitourinary medicine

---

gum ³ British  

/ ɡʌm /

noun

1. Technical name: gingiva.  the fleshy tissue that covers the jawbones around the bases of the teeth

---

gum ⁴ British  

/ ɡʌm /

noun

1. used in the mild oath by gum!

---

gum ¹ Scientific  

/ gŭm /

1. Any of various sticky substances that are produced by certain plants and trees and dry into brittle solids soluble in water. Gums typically are colloidal mixtures of polysaccharides and mineral salts.

---

gum ² Scientific  

/ gŭm /

1. See gingiva

---

Other Word Forms

• gumless adjective
• gumlike adjective

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

Example Sentences

There are three specific cases, however, where changing course halfway through does gum up the works, and you’re better off leaving things as they are, the experts say.

From MarketWatch • Mar. 23, 2026

The gum base that makes up about 15% to 30% of a typical piece of chewing gum is often petroleum-derived, academic studies show.

From The Wall Street Journal • Mar. 21, 2026

Evans says she was only wearing one shoe and chewing gum during the ceremony, not expecting to scoop the prize against the casting agents of Marty Supreme, starring Timothée Chalamet, and Michael B Jordan's Sinners.

From BBC • Feb. 24, 2026

A mini natural mouth wash, gum, a charging cord, deodorant, there’s probably a spare pair of socks, and then those sniffy menthol things for your nose.

From Los Angeles Times • Feb. 14, 2026

“You believed in me. You’ve never put gum in my hair or tripped me while I was walking or stolen my lunch money. Believe me, you’re special in my book.”

From "The Way to Rio Luna" by Zoraida Cordova

Related Words

• paste
• wax