mastic (n.)youdaoicibaDictYouDict[mastic 词源字典]
resin obtained from certain trees, late 14c., from Old French mastic (13c.) and directly from Late Latin mastichum, from Latin mastiche, from Greek mastikhe, of uncertain origin, probably related to masasthai "to chew" (see mastication). The substance is used as a chewing gum in the East.[mastic etymology, mastic origin, 英语词源]