ajowan Syllabification: (aj·o·wan)Pronunciation: /ˈajəˌwan/Definition of ajowan noun an annual plant (Trachyspermum ammi) of the parsley family, with feathery leaves and white flowers, native to India. the aromatic seeds of the ajowan plant, used as a culinary spice. the essential oil of the ajowan plant. Origin:from Hindi ajvāynajowan in other Oxford dictionaries Definition of ajowan in the British & World English dictionary