Copal

n. friable aromatic resin of the Copal tree used in varnishes

Copal is a type of resin produced by plant or tree secretions, particularly identified with the forms of aromatic tree resins used by the cultures of pre-Columbian Mesoamerica as a ceremonially burned incense, as well as for a number of other purposes. More generically, the term copal is now also used to describe resinous substances in an intermediate stage of polymerization and hardening between more viscous and 'gummy' resins and amber. The word copal is derived from the Nahuatl language word copalli, meaning "incense". To the pre-Columbian Maya and contemporary Maya peoples it is known in the various Mayan languages as pom (or a close variation thereof), although the word itself has been demonstrated to be a loanword to Mayan from (proto-)Mixe-Zoquean languages.
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Noun
1. a brittle aromatic resin used in varnishes
(hypernym) natural resin
(hyponym) courbaril copal

n. copal

A resinous substance flowing spontaneously from trees of Zanzibar, Madagascar, and South America (Trachylobium Hornemannianum, T. verrucosum, and Hymenaea Courbaril), and dug from earth where forests have stood in Africa; -- used chiefly in making varnishes.