Lewis & Short

1. moenĭa, ĭum (gen. plur. moeniōrum for moenium, like anciliorum for ancilium, acc. to Cledon. p. 1898 P.; abl. plur. MOENIIS for moenibus, Inscr. Grut. 408, 1, 34; in sing. moene: moene singulariter dixit Ennius (al. Naevius), Paul. ex Fest. p. 145 Müll.), n. [perh. Sanscr. root mū-, bind; Gr. ἀμύνω, μύνη; cf.: munus, immunis, munio], defensive walls, ramparts, bulwarks, city walls, as a means of protection and security.

  1. I. Lit. (class.): uti haberent tuta oppida quod operis muniebant, moenia dicta, Varr. L. L. 5, § 141 Müll.: domicilia conjuncta, quas urbes dicimus, moenibus sepserunt, Cic. Sest. 42, 91: diligentius urbem religione quam ipsis moenibus cingitis, id. N. D. 3, 40, 94; id. Ac. 2, 44, 137; id. Rep. 1, 11, 17: altissima, Caes. B. C. 3, 80: cum paene inaedificata in muris ab exercitu nostro moenia viderentur, bulwarks, fortifications, id. ib. 2, 16: summa arcis, Enn. ap. Macr. S. 1, 4 (Ann. v. 170 Vahl.): dividimus muros, et moenia pandimus urbis, Verg. A. 2, 234.
  2. II. Transf.
    1. A. Poet., in gen., walls, enclosure: moenia navis, Ov. M. 11, 532: angusta theatri, Lucr. 4, 82: mundi, id. 1, 73; cf. caeli, Ov. M. 2, 401.
    2. B. A city enclosed by walls, a walled town (mostly poet. and in post-Aug. prose): nulla jam pernicies moenibus ipsis intra moenia comparabitur, to our walls, i. e. our city, Cic. Cat. 2, 1, 1: moenia lata videt triplici circumdata muro, Verg. A. 6, 549: moenia circumdare muro, Flor. 1, 4, 2; Vitr. 8, 4.
    3. * C. A mansion, dwelling: Ditis magni, Verg. A. 6, 541.

2. moenĭa, for munia, v. h. v.

mūnĭa (archaic form moenia: moenia praeter aedificia significant etiam et munia, hoc est officia, Paul. ex Fest. p. 151 Müll.), ōrum (class. only in the form munia, nom. and acc.), n. [Sanscr. root mū, bind; that to which one is bound; cf. Gr. ἀμύνω; also moenia, murus, munus, immunis, etc.], duties, functions, esp. official or professional duties (class.; syn.: officia, munera): munia candidatorum, Cic. Mur. 35, 73: qui suis cervicibus tanta munia atque rem publicam sustinent, id. Sest. 66, 138: cuncti omnium ordinum extrema munia sequi, Sall. Fragm. ap. Non. 137, 12: belli pacisque munia facere, Liv. 1, 42: senatūs, magistratuum, legum in se trahere, Tac. A. 1, 2; cf.: munia consulatūs obire, id. ib. 2, 26: munia ducis implere, id. H. 1, 62: vitae servare munia, Hor. Ep. 2, 2, 131.
Post-class. forms, gen.: OB HAEC INSIGNIA GENERA MVNIORVM, Inscr. Spon. Miscell. Antiq. p. 36 (A. D. 394), but gen. muniūm, Tert. Cor. Mil. 11.
Dat. munibus, Claud. Laud. Stil. 3, 76: muniis, Amm. 31, 2, 20; Serv. Verg. A. 12, 559; Cod. Just. 8, 10, 8 al.