"mastic" in the noun sense
1. mastic
an aromatic exudate from the mastic tree used chiefly in varnishes
2. mastic
a pasty cement used as an adhesive or filler
3. mastic, mastic tree, lentisk, Pistacia lentiscus
an evergreen shrub of the Mediterranean region that is cultivated for its resin
Source: WordNet® (An amazing lexical database of English)
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