[ 'fʌstɪk ]
■ noun
1》 (also old ~ ) a tropical American tree with heartwood that yields a yellow dye and other products. [ Maclura tinctoria .]
2》 (also young ~ ) the smoke tree.
Origin
ME: via Fr. from Sp. fustoc , from Arab. fustuḳ , from Gk pistakē 'pistachio tree'.