n. a yellow dye obtained from either of two kinds of wood, esp. old fustic. old fustic 1 a tropical tree, Chlorophora tinctoria, native to America. 2 the wood of this tree. young fustic 1 a sumac, Cotinus coggyria, native to Europe (also called Venetian sumac). 2 the wood of this tree.
[ F f. Sp. fustoc f. Arab. fustuk f. Gk pistake pistachio ]