Lewis & Short

Mūsēus or Mūsaeus, a, um, adj., = Μουσεῖος,

  1. I. of or belonging to the muses, poetical or musical (poet.): musaea mele, Lucr. 2, 412: musaeo lepōre, id. 1, 934: vates, i. e. Orpheus, App. M. 2, p. 124.
  2. II. For musivus, mosaic, Inscr. Spon. Miscell. Sect. 2.