Lewis & Short

mūtātōrĭus, a, um, adj. [mutator], of or belonging to changing or exchanging (post-class.).

  1. I. Adj.: indumentum, Tert. Res. Carn. 56.
  2. II. Subst.: mūtātōrĭ-um, i, n.
    1. A. A cape, tippet, wimple, change of raiment; Gr. ἀναβόλαιον, Hier. in Isa. 3, 22; Vulg. Isa. 3, 22; id. Zech. 3, 4 al.
    2. B. Mutatorium Caesaris, perh. a house of accommodation or a pleasure-house, Inscr. Gud. 199, 7.