<p><strong>Noun</strong></p><ul><li>any of several bulbous plants of the genus <em>Hippeastrum</em>, especially <em>H. puniceum</em>, which has large red, pink, or white lilylike flowers and is popular as a houseplant.</li><li>a bulbous plant, <em>Amaryllis belladonna</em>, having clusters of usually rose-colored lilylike flowers.</li><li>any of several bulbous, ornamental plants with lilylike flowers.</li><li><em>Amaryllis</em>, a shepherdess or country girl, especially in classical and later pastoral poetry.</li><li>a first name.</li></ul>