Amaryllis \Am`a*ryl"lis\, n. [L. Amaryllis, Gr. ?, ?, the name of a country girl in Theocritus and Virgil.] 1. A pastoral sweetheart. [1913 Webster] To sport with Amaryllis in the shade. --Milton. [1913 Webster] 2. (bot.) (a) A family of plants much esteemed for their beauty, including the narcissus, jonquil, daffodil, agave, and others. (b) A genus of the same family, including the Belladonna lily. [1913 Webster]