What is "xanthoxylum"

Xanthoxylum \Xan*thox"y*lum\, n. [NL., from Gr. xanqo`s yellow + xy`lon wood.] (Bot.) A genus of prickly shrubs or small trees, the bark and rots of which are of a deep yellow color; prickly ash.

Note: The commonest species in the Northern United States is Xanthoxylum Americanum. See Prickly ash, under Prickly.

Yellowwood \Yel"low*wood`\, n. (Bot.) The wood of any one of several different kinds of trees; also, any one of the trees themselves. Among the trees so called are the Cladrastis tinctoria, an American leguminous tree; the several species of prickly ash ( Xanthoxylum); the Australian Flindersia Oxleyana, a tree related to the mahogany; certain South African species of Podocarpus, trees related to the yew; the East Indian Podocarpus latifolia; and the true satinwood ( Chloroxylon Swietenia). All these Old World trees furnish valuable timber.