Definition of mastic

< masthead

masticate >

mas·tic    (mstk) KEY 

NOUN:

1. The mastic tree.
2. The aromatic resin of the mastic tree, used especially in varnishes, lacquers, adhesives, and condiments and as an astringent.
3. A pastelike cement used in highway construction, especially one made with powdered lime or brick and tar.

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ETYMOLOGY:
Middle English, mastic resin, from Old French mastich, from Latin mastichum, mastich, from Greek mastikh, chewing gum, mastic, from mastikhn, to grind the teeth