bitter_orange
1. [ noun ] (botany) any of various common orange trees yielding sour or bitter fruit; used as grafting stock
Synonyms: Seville_orange bitter_orange_tree bigarade marmalade_orange Citrus_aurantium sour_orange
Related terms: orange genus_Citrus
2. [ noun ] (chemistry,botany,food) highly acidic orange used especially in marmalade
Synonyms: sour_orange Seville_orange
Related terms: orange sour_orange