(n) small fast-growing spiny deciduous Chinese orange tree bearing sweetly scented flowers and decorative but inedible fruit: used as a stock in grafting and for hedges, Syn. trifoliata, Poncirus trifoliata, wild orange
(n) perennial plant of Europe and America having racemes of white or purplish flowers and intensely bitter trifoliate leaves; often rooting at water margin and spreading across the surface, Syn. marsh trefoil, bogbean, bog myrtle, Menyanthes trifoliata, buckbean