resin

n. any of several viscous organic substances derived from plants (used to manufacture medications, paints, plastics, and inks); synthetic substance similar to natural resin

v. coat with resin, treat with resin

Resin or Rosin (Oxford dictionary) is a hydrocarbon secretion of many plants, particularly coniferous trees, valued for its chemical constituents and uses such as varnishes, adhesives, as an important source of raw materials for organic synthesis, or for incense and perfume. Fossilized resins are the source of amber. The term is also used for synthetic substances of similar properties.
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Resin /res·in/ 1. a solid or semisolid organic substance exuded by plants or by insects feeding on plants, or produced synthetically; they are [more]Resin - Community and Resources

Noun
1. any of a class of solid or semisolid viscous substances obtained either as exudations from certain plants or prepared by polymerization of simple molecules
(synonym) rosin
(hypernym) organic compound
(hyponym) East India kino, Malabar kino, kino gum
(derivation) resinate

n. resin, any of several viscous organic substances derived from plants (used to manufacture medications, paints, plastics, and inks); synthetic substance similar to natural resin