mastic

[mas-tik]
noun
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, especially one yielded by other trees of the same genus.
5.
Building Trades.
a.
any of various preparations containing bituminous materials and used as an adhesive or seal.
b.
a pasty form of cement used for filling holes in masonry or plaster.

Origin:
1350–1400; Middle English mastyk < Latin mastichē < Greek mastíchē chewing gum, akin to mastichân to gnash the teeth

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Collins
World English Dictionary
mastic (ˈmæstɪk)
 
n
1.  an aromatic resin obtained from the mastic tree and used as an astringent and to make varnishes and lacquers
2.  mastic tree
 a.  a small Mediterranean anacardiaceous evergreen tree, Pistacia lentiscus, that yields the resin mastic
 b.  any of various similar trees, such as the pepper tree
3.  any of several sticky putty-like substances used as a filler, adhesive, or seal in wood, plaster, or masonry
4.  a liquor flavoured with mastic gum
 
[C14: via Old French from Late Latin mastichum, from Latin, from Greek mastikhē resin used as chewing gum; from mastikhan to grind the teeth]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

mastic
"resin obtained from certain trees," 1373, from O.Fr. mastic, from L.L. mastichum, from L. mastiche, from Gk. mastikhe, probably related to masasthai "to chew" (see mastication). The substance is used as a chewing gum in the East.
Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Britannica
Encyclopedia

mastic

aromatic resin, obtained as a soft exudation from incisions in mastic trees. It is used chiefly to make pale varnishes for protecting metals and paintings. When dispersed in bodied (thickened by heating) linseed oil, mastic is known as megilp and is used as a colour vehicle. Mastic is also used as an adhesive in dental work

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Evergreen strawberry trees, along with mastic and other common shrubs, resprout following fire.
Aluminum epoxy mastic primer is not suitable for use in contact with freshly poured concrete.
These materials include floor tiles and adhesive pipe insulation and heating system duct insulation and mastic.
Mastic should be closely inspected after floor tile removal to determine its condition.
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