bumelia

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Any of various often thorny North American trees or shrubs of the genus Bumelia, especially B. lanuginosa or B. lycioides of the southern United States, having very hard wood and black fleshy fruit. Also called buckthorn, shittimwood.

Century Dictionary and Cyclopedia

1. n. A genus of plants, of the natural order Sapotaceœ. They are trees or shrubs, with a milky juice, a spiny stem, and small white or greenish flowers, are natives of the West Indies, and are called there bastard bully-tree. The fruit of B. lycioides is said to be useful in diarrhea.

WordNet 3.0

1. n. deciduous or evergreen American shrubs small trees having very hard wood and milky latex