| Noun | 1. | genus Chelidonium - one species: greater celandine dilleniid dicot genus - genus of more or less advanced dicotyledonous trees and shrubs and herbs family Papaveraceae, Papaveraceae, poppy family - herbs or shrubs having milky and often colored juices and capsular fruits Chelidonium majus, greater celandine, swallow wort, swallowwort, celandine - perennial herb with branched woody stock and bright yellow flowers |