The Collaborative International Dictionary of English v.0.48:

Crinum \Cri"num\ (kr[imac]"n[u^]m), n. [NL., fr. Gr. kri`non
   lily.] (Bot.)
   A genus of bulbous plants, of the order Amaryllidace[ae],
   cultivated as greenhouse plants on account of their beauty.
   [1913 Webster]