mastic
Mastic (noun) means an evergreen shrub or small tree, Pistacia lentiscus (mastic tree), native to the Mediterranean.
Etymology
The word came into English as Middle English mastik, from Old French mastic, from Latin mastiche, from Ancient Greek μαστίχη (mastíkhē), from μαστιχάω (mastikháō, “to chew”) — note the chewing sense behind chewing gum. Its broader use for cements came about by extension, from earlier cements made with the tree's resin. It is a doublet of mastika.