tuberose(n = noun.plant) polianthes tuberosa - a tuberous Mexican herb having grasslike leaves and cultivated for its spikes of highly fragrant lily-like waxy white flowers; Array
tuberose, n. [Cf. G. tuberose, F. tubéreuse, NL. Polianthes tuberosa. See Tuberous.].
A plant (Polianthes tuberosa) with a tuberous root and a liliaceous flower. It is much cultivated for its beautiful and fragrant white blossoms. [1913 Webster]