sabadillaPronunciation: /ˌsabəˈdɪlə/Definition of sabadilla noun a Mexican plant of the lily family, whose seeds contain veratrine. Schoenocaulon officinale, family Liliaceae [mass noun] a preparation of sabadilla seeds, used as an agricultural insecticide and in medicines: [as modifier]:sabadilla dustOrigin: early 19th century: from Spanish cebadilla, diminutive of cebada 'barley'sabadilla in other Oxford dictionaries Definition of sabadilla in the US English dictionary