sour orange   (TTS Sound)

The noun sour orange has 2 senses

• sour orange, Seville orange, bitter orange, bitter orange tree, bigarade, marmalade orange, Citrus aurantium -- (any of various common orange trees yielding sour or bitter fruit; used as grafting stock)


• bitter orange, Seville orange, sour orange -- (highly acidic orange used especially in marmalade)