及物动词
名词
1. 口香糖
Gum is a substance, usually tasting of mint, which you chew for a long time but do not swallow.
2. 牙龈；齿龈；牙床
Your gums are the areas of firm, pink flesh inside your mouth, which your teeth grow out of.
3. 黏胶；黏合剂
Gum is a type of glue that is used to stick two pieces of paper together.
1. the tissue (covered by mucous membrane) of the jaws that surrounds the bases of the teeth
Synonym: gingiva
2. a preparation (usually made of sweetened chicle) for chewing
Synonym: chewing gum
3. any of various trees of the genera Eucalyptus or Liquidambar or Nyssa that are sources of gum
Synonym: gum tree
4. wood or lumber from any of various gum trees especially the sweet gum
Synonym: gumwood
5. cement consisting of a sticky substance that is used as an adhesive
6. any of various substances (soluble in water) that exude from certain plants
they are gelatinous when moist but harden on drying