Lewis & Short

mūnĭfex, ĭcis, com. [munia-facio], one who performs service or is on duty (postAug.).

  1. I. Lit., of soldiers: munifices, milites, qui munera facere coguntur, Veg. Mil. 2, 7; cf. Paul. ex Fest. s. v. BENEFICIARII, p. 33 Müll.
  2. II. Transf., of things: munifex mamma, i. e. suckling, Plin. 11, 40, 95, § 234.