gumming

noun4

1. •
   The act of chewing without teeth.

   • We give teething babies ABC books made of materials that can withstand repeated gummings. — 1994
2. •
   The act of fastening with gum, especially the application of gum-water to a lithographic stone.
3. •
   Synonym of gummosis (“plant disease”).
4. •
   (historical) The manual removal of clay, or "gum", from cut coal.