|ōlē|andə(r) noun
( -s )
Etymology: Medieval Latin oleander, alteration of arodandrum, lorandrum, probably alteration of Latin rhododendron — more at rhododendron
: a plant of the genus Nerium ; specifically : an ornamental evergreen shrub ( Nerium oleander ) that is native to the East Indies but widely cultivated and naturalized in warm regions and that has narrow entire leaves and clusters of fragrant white to red flowers