An old black oak tree.
black oak definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
any of various North American oaks (esp. Quercus velutina) with dark bark or foliage
black oak definition by American Heritage Dictionary
A deciduous North American tree (Quercus velutina) having divided leaves with pointed lobes, a blackish outer bark, a yellowish inner bark, and durable wood.