What does "fustic" mean?

Fustic: The wood of the Maclura tinctoria, a tree growing in the West Indies, used in dyeing yellow; -- called also old fustic. [Written also fustoc.] Note: Other kinds of yellow wood are often called fustic; as that of species of Xanthoxylum, and especially the Rhus Cotinus, which is sometimes called young fustic to distinguish it from the Maclura. See Fustet.