The Collaborative International Dictionary
Mastic \Mas"tic\, n. [F., fr. L. mastiche, mastichum, Gr. ?, fr. ? to chew, because of its being used in the East for chewing.] [Written also mastich.]
(Bot.) A low shrubby tree of the genus Pistacia ( Pistacia Lentiscus), growing upon the islands and coasts of the Mediterranean, and producing a valuable resin; -- called also, mastic tree.
A resin exuding from the mastic tree, and obtained by incision. The best is in yellowish white, semitransparent tears, of a faint smell, and is used as an astringent and an aromatic, also as an ingredient in varnishes.
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A kind of cement composed of burnt clay, litharge, and linseed oil, used for plastering walls, etc.
Barbary mastic (Bot.), the Pistachia Atlantica.
Peruvian mastic tree (Bot.), a small tree ( Schinus Molle) with peppery red berries; -- called also pepper tree.
West Indian mastic (Bot.), a lofty tree ( Bursera gummifera) full of gum resin in every part.
Wikipedia
Schinus molle (Peruvian pepper , also known as American pepper, Peruvian peppertree, escobilla, false pepper, molle del Peru, pepper tree, peppercorn tree, Californian pepper tree, pirul and Peruvian mastic) is an evergreen tree that grows to 15 meters (50 feet). It is native to the Peruvian Andes. The bright pink fruits of Schinus molle are often sold as "pink peppercorns" although S. molle is unrelated to true pepper ( Piper nigrum). The tree is host to Bombycomorpha bifascia, known as the Pepper-tree moth.