am·a·ryl·lis 
(ăm′ə-rĭlĭs)
(ăm′ə-rĭlĭs)n.
1. Any of several chiefly tropical American bulbous plants of the genus Hippeastrum, grown as ornamentals for their large, showy, funnel-shaped, variously colored flowers.
2. See belladonna lily.
3. Any of several similar or related plants.
[New Latin Amaryllis, genus name, from Latin, name of a shepherdess, from Greek Amarullis.]