1. (noun)mastic an aromatic exudate from the mastic tree; used chiefly in varnishes Synonyms: lentisk, mastictree
2. (noun)mastic a pasty cement used as an adhesive or filler Synonyms: lentisk, mastictree
3. (noun)mastic, mastic tree, lentisk, Pistacia lentiscus an evergreen shrub of the Mediterranean region that is cultivated for its resin Synonyms: lentisk, mastic, mastictree