1. (Science: botany) a low shrubby tree of the genus pistacia (P. Lentiscus), growing upon the islands and coasts of the Mediterranean, and producing a valuable resin; called also, mastic tree.
2. 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.
3. A kind of cement composed of burnt clay, litharge, and linseed oil, used for plastering walls, etc.
(Science: botany) barbary mastic, a lofty tree (Bursera gummifera) full of gum resin in every part.
Origin: f, fr. L. Mastiche, mastichum, gr, fr. To chew, because of its being used in the East for chewing
alternative forms: mastich.