black gumblack gum
a tall, deciduous tupelo (Nyssa sylvatica) with sour purple fruits and leaves that turn scarlet in the fall, found in moist forests of the E U.S.
A deciduous tree (Nyssa sylvatica) of eastern North America, having glossy, somewhat leathery leaves that turn bright scarlet or orange in the fall. Also called pepperidge . Also called sour gum .