osage orange

Short definition from Wiktionary

Noun

1. 1
   Alternative form of Osage orange.
2. 2
   Alternative form of Osage orange.
3. 3
   The tree Maclura pomifera, noted for its large, dense, wrinkly, bright green and unpalatable fruit, once a popular hedge tree in the United States.
4. 4
   The fruit of this tree.