oleander (n.)youdaoicibaDictYouDict[oleander 词源字典]
"rose bay," a poisonous evergreen Mediterranean shrub, c. 1400, from Medieval Latin oleander, probably (by influence of Latin olea "olive tree") from Late Latin lorandrum, from Latin rhododendron (see rhododendron), itself altered by influence of Latin laurea "laurel," on resemblance of leaves. This round-about etymology is supported by the French word for it, laurier rose.[oleander etymology, oleander origin, 英语词源]