n :  an aromatic resinous exudation obtained usu. in the form of yellowish to greenish lustrous transparent brittle tears from incisions in a small southern European tree (Pistacia lentiscus) of the sumac family and used chiefly in varnishes (as for lining dental cavities) .
 
 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2024.