unicorn plant

noun

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.

Origin of unicorn plant

First recorded in 1790–1800

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018