tuberose UK /ˈtjuːbəɹəʊz/US /ˈtubəɹoʊz/noun 2adjective 1forms 3 noun2 •Any plant in genera Polianthes or Manfreda (syns. of Agave), now both in Agave subg. Manfreda. •especially Agave amica (syn. Poliantes tuberosa), that has white flowers and grass-like leaves, used in perfumery.Only now Mariam saw a basket on the sill. White tuberoses spilled from its sides. — 2007 adjective1 •tuberous formstuberoses · more tuberose · most tuberose