from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A synonym of bitter orange - a tree and fruit of the species Citrus aurantium.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any of various common orange trees yielding sour or bitter fruit; used as grafting stock
- n. highly acidic orange used especially in marmalade
From Seville + orange. (Wiktionary)