Gum



GRE 蓝宝 考研

解释

GRE 红宝书

• n.橡皮, 树胶
• ［类］ resin : tree / gum : rubber plant ( 树分泌树脂 / 橡胶植物分泌树胶)

Webster Collegiate

I. noun

• Etymology: Middle English gome, from Old English gōma palate; akin to Old High German guomo palate, and perhaps to Greek chaos abyss
• Date: before 12th century
• 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

II. transitive verb (gummed; gumming)

• Date: 1777
• 1. to enlarge gullets of (a saw)
• 2. to chew with the gums

III. noun

• Etymology: Middle English gomme, from Middle French, from Latin cummi, gummi, from Greek kommi, from Egyptian qmyt
• Date: 14th century
• 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 1
  • b. any of various plant exudates (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 (as a black gum) that yields gum
  • b. Australian eucalyptus
• 4. the wood or lumber of a gum; especially that of the sweet gum
• 5. chewing gum

IV. verb (gummed; gumming)

• Date: 1597
• 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

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