kauri resin
noun
1.
a hard resin obtained from the bark of the kauri or found, sometimes in masses of as much as 100 pounds (45 kg), in the soil where the tree has grown: used chiefly in making varnish.
Also,
kauri
,
kauri gum,
kauri copal
.
Origin
1855-60
British Dictionary definitions for
kauri gum
kauri gum
noun
1.
a hard resin from the kauri tree, found usually as a fossil in the soil where an extinct tree once grew: used chiefly in making varnishes