| 单词 | gum |
| 释义 | gum 1. n. & v. --n 1. a a viscous secretion of some trees and shrubs that hardens on drying but is soluble in water (cf. RESIN). b an adhesive substance made from this. 2. US chewing gum. 3. = GUMDROP. 4. = gum arabic. 5. = gum-tree. 6. a secretion collecting in the corner of the eye. 7. US = GUMBOOT. --v (gummed, gumming) 1. tr. smear or cover with gum. 2. tr. (usu. foll. by down, together, etc.) fasten with gum. 3. intr. exude gum. Phrases and idioms gum arabic a gum exuded by some kinds of acacia and used as glue and in incense. gum benjamin benzoin. gum dragon tragacanth. gum juniper sandarac. gum resin a vegetable secretion of resin mixed with gum, e.g. gamboge. gum-tree a tree exuding gum, esp. a eucalyptus. gum up 1. (of a mechanism etc.) become clogged or obstructed with stickiness. 2. colloq. interfere with the smooth running of (gum up the works). up a gum-tree colloq. in great difficulties. Etymology: ME f. OF gomme ult. f. L gummi, cummi f. Gk kommi f. Egypt. kemai 2. n. (usu. in pl.) the firm flesh around the roots of the teeth. Phrases and idioms gum-shield a pad protecting a boxer's teeth and gums. Etymology: OE goma rel. to OHG guomo, ON g{oacute}mr roof or floor of the mouth 3. n. colloq. (in oaths) God (by gum!). Etymology: corrupt. of God |
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