black gum

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A deciduous tree (Nyssa sylvatica) of eastern North America, having glossy, somewhat leathery leaves that turn bright scarlet or orange in the fall.

from The Century Dictionary.

• noun The water-tupelo, Nyssa biflora, a tree inhabiting wet ground along the Atlantic and Gulf coasts.
• noun Eucalyptus stellulata.
• noun A North American tree, Nyssa multiflora, 40 to 70 feet high, bearing a dark-blue berry.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A tree native to eastern North America, Nyssa sylvatica.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun columnar tree of eastern North America having horizontal limbs and small leaves that emerge late in spring and have brilliant color in early fall
• noun a small mallee with rough dark-colored bark toward the butt; yields a red eucalyptus kino gum