Gum

1. n. A rubber overshoe.
2. n. The dense tissues which invest the teeth, and cover the adjacent parts of the jaws.
3. v. t. To deepen and enlarge the spaces between the teeth of (a worn saw). See Gummer.
4. n. A vegetable secretion of many trees or plants that hardens when it exudes, but is soluble in water; as, gum arabic; gum tragacanth; the gum of the cherry tree. Also, with less propriety, exudations that are not soluble in water; as, gum copal and gum sandarac, which are really resins.
5. n. See Gum tree, below.
6. n. A hive made of a section of a hollow gum tree; hence, any roughly made hive; also, a vessel or bin made of a hollow log.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.