| 1. | Also called mastic tree, lentisk. a small Mediterranean tree, Pistacia lentiscus, of the cashew family, that is the source of an aromatic resin used in making varnish and adhesives. |
| 2. | any of several similar or related trees, as a pepper tree, Schinus molle, of western South America. |
| 3. | the resin obtained from the mastic. |
| 4. | any similar resin, esp. one yielded by other trees of the same genus. |
| 5. | Building Trades.
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| mastic tree n. A small evergreen shrub (Pistacia lentiscus) of the Mediterranean region, cultivated for its resin. Also called lentisk. |