What is the meaning of the word "gum"?

Definitions:

  1. any of various substances, soluble in water, that exude from certain plants copy to clipboard noun
    • The gum oozed out of the tree trunk. copy to clipboard
  2. cover, fill, fix or smear with or as if with gum copy to clipboard verb
    • if you gum the tape it is stronger copy to clipboard
  3. exude or form gum copy to clipboard verb
    • these trees gum in the Spring copy to clipboard
  4. the tissue, covered by mucous membrane, of the jaws that surrounds the bases of the teeth copy to clipboard noun
    • The dentist said my gums were in excellent shape. copy to clipboard

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