osage orange

from WordNet (r) 3.0 (2006)

osage orange
    n 1: small shrubby deciduous yellowwood tree of south central
         United States having spines, glossy dark green leaves and
         an inedible fruit that resembles an orange; its hard
         orange-colored wood used for bows by Native Americans;
         frequently planted as boundary hedge [syn: {osage orange},
         {bow wood}, {mock orange}, {Maclura pomifera}]

from The Collaborative International Dictionary of English v.0.48

Osage orange \O"sage or"ange\ (Bot.)
   An ornamental tree of the genus {Maclura} ({Maclura
   aurantiaca}), closely allied to the mulberry ({Morus}); also,
   its fruit. The tree was first found in the country of the
   Osage Indians, and bears a hard and inedible fruit of an
   orangelike appearance. See {Bois d'arc}.
   [1913 Webster]

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