1. any plant of the genus Seseli having dense umbels of small white or pink flowers and finely divided foliage • Syn: moon carrot • Hypernyms: herb, herbaceous plant • Member Holonyms: Seseli, genus Seseli 2. a slender roadside herb of western Europe and Mediterranean areas that has foliage resembling parsley and has white flowers with aromatic seeds • Syn: Sison amomum • Hypernyms: herb, herbaceous plant • Member Holonyms: Sison, genus Sison