Kentucky coffee tree

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

• noun A deciduous North American tree (Gymnocladus dioicus) in the pea family, having large compound leaves and long flat pods containing seeds that were formerly roasted and used as a coffee substitute.

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

• noun handsome tree of central and eastern North America having large bipinnate leaves and green-white flowers followed by large woody brown pods whose seeds are used as a coffee substitute