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.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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