1. bigarade, bitter orange, bitter orange tree, citrus aurantium, marmalade orange, seville orange, sour orange

any of various common orange trees yielding sour or bitter fruit; used as grafting stock

Synonyms

• bigarade
• bitter orange
• bitter orange tree
• citrus aurantium
• marmalade orange
• seville orange

2. bitter orange, seville orange, sour orange

highly acidic orange used especially in marmalade

Synonyms

• bitter orange
• seville orange