A viscous hydrocarbon secretion of many plants, particularly coniferous trees.
"The ancient furniture was polished with a clear coat of resin harvested from pine trees."
In plain English: Resin is a sticky, hard substance that comes from trees and turns into plastic when mixed with other materials.
"She carefully scraped off the sticky resin from her fingers after working with pine branches."
Usage: Resin refers to the sticky substance that oozes from tree bark and hardens into amber or varnish when exposed to air. It is often confused with sap, but unlike watery sap which circulates throughout a plant's vascular system, resin specifically comes from specialized ducts in coniferous trees as a protective sealant against injury.
To apply resin to.
"The artisan carefully resins the cracks in the ancient wooden table before sanding it smooth."
The word resin entered Middle English from the Old French résine and ultimately derives from the Latin resīna. It shares a common origin with the related term rosin.