Noun
any of various common orange trees yielding sour or bitter fruit; used as grafting stock
highly acidic orange used especially in marmalade
Source: WordNetBitter orange has been used historically in Chinese medicine and by natives of the Amazon rainforest to treat nausea, indigestion and constipation. Source: Internet
Honey in Greece is mainly honey from the nectar of fruit trees and citrus trees: lemon, orange, bigarade (bitter orange) trees, thyme honey, and pine honey. Source: Internet
The extra bitterness is often obtained by using nutmeg and/or bitter orange peel in the drink recipe. Source: Internet