Lewis & Short

mīmārĭus, a, um, adj. [mimus], for mimicus,

  1. I. of or belonging to a mime, mimic (post-class.): mimarii scurrae, Capitol Ver. 8, 1.
  2. II. Subst.: mīmārĭus, ĭi, m., a mimic actor, Inscr. Orell. 2631.