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BNC: 7896 COCA: 5971

gum

1 gum /ˈgʌm/ noun
plural gums
1 gum
/ˈgʌm/
noun
plural gums
Learner's definition of GUM
[count]
: the flesh that surrounds the roots of your teeth牙龈;牙床usually plural通常用复数
see picture at mouth
compare 3gum
2 gum /ˈgʌm/ verb
gums; gummed; gumming
2 gum
/ˈgʌm/
verb
gums; gummed; gumming
Learner's definition of GUM
[+ object] US
: to chew (something) with the gums because you do not have teeth(因没有牙齿)用牙龈咀嚼
compare 4gum
3 gum /ˈgʌm/ noun
plural gums
3 gum
/ˈgʌm/
noun
plural gums
Learner's definition of GUM
[noncount] : chewing gum
see also bubble gum
[count] British : gumdrop
[count, noncount] : a sticky substance in some kinds of plants that is hard when it dries树脂;树胶

by gum

informal + old-fashioned
used to show that you are surprised or determined天哪,真的(用于表示惊讶或坚决)
compare 1gum
4 gum /ˈgʌm/ verb
gums; gummed; gumming
4 gum
/ˈgʌm/
verb
gums; gummed; gumming
Learner's definition of GUM

gum up

[phrasal verb]
gum (something) up or gum up (something) informal
: to prevent (something) from working or flowing properly使卡住;阻碍;粘住
often used in phrase gum up the works常用于短语gum up the works
compare 2gum
BNC: 7896 COCA: 5971

gum

1 of 4

noun (1)

: the tissue that surrounds the necks of teeth and covers the alveolar parts of the jaws
broadly : the alveolar portion of a jaw with its enveloping soft tissues

gum

2 of 4

verb (1)

gummed; gumming

transitive verb

1
: to enlarge gullets of (a saw)
2
: to chew with the gums

gum

3 of 4

noun (2)

1
a
: any of numerous colloidal polysaccharide substances of plant origin that are gelatinous when moist but harden on drying and are salts of complex organic acids compare mucilage sense 1
b
: any of various plant exudates (such as an oleoresin or gum resin)
2
: a substance or deposit resembling a plant gum (as in sticky or adhesive quality)
3
a
: a tree (such as a black gum) that yields gum
b
Australia : eucalyptus
4
: the wood or lumber of a gum
especially : that of the sweet gum
5

gum

4 of 4

verb (2)

gummed; gumming

transitive verb

: to clog, impede, or damage with or as if with gum
gum up the works

intransitive verb

1
: to exude or form gum
2
: to become gummy
gummer noun

Word History

Etymology

Noun (1)

Middle English gome, from Old English gōma palate; akin to Old High German guomo palate, and perhaps to Greek chaos abyss

Noun (2)

Middle English gomme, from Middle French, from Latin cummi, gummi, from Greek kommi, from Egyptian qmyt

First Known Use

Noun (1)

before the 12th century, in the meaning defined above

Verb (1)

1777, in the meaning defined at sense 1

Noun (2)

14th century, in the meaning defined at sense 1a

Verb (2)

1597, in the meaning defined at transitive sense

Time Traveler
The first known use of gum was before the 12th century
BNC: 7896 COCA: 5971
gum

noun

ADJECTIVE | GUM + NOUN ADJECTIVElower, upper下牙齦;上牙齦toothless沒有牙的牙牀The old man smiled to reveal toothless gums.老頭笑了,露出沒有牙的牙牀。bleeding, swollen出血的/腫脹的牙齦GUM + NOUNdisease牙齦病

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