WordNet sense 1 (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):

trifoliata, trifoliate orange, Poncirus trifoliata

WordNet sense 2 (small flowering evergreen tree of southern United States):

cherry laurel, mock orange, laurel cherry, Prunus caroliniana