The Collaborative International Dictionary of English v.0.48:

amyous \am"y*ous\ ([a^]m"[i^]*[u^]s), a. [Gr. 'a`myos.] (Med.)
   Characterized by lack of muscular tissue.
   [1913 Webster + AS]

The Collaborative International Dictionary of English v.0.48:

Amyous \Am"y*ous\ ([a^]m"[i^]*[u^]s), a. [Gr. 'a`myos.] (Med.)
   Wanting in muscle; without flesh.
   [1913 Webster]