Meaning of unicorn plant

u'nicorn plant"

Pronunciation: [key]
  1. a North American plant, Proboscidea (Martynia) louisianica, having creamy-white to red flowers blotched with purple, and a woody capsule with a long, curved beak.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.