Lewis & Short

ex-armo, āvi, ātum, 1, v. a., to deprive of arms, to disarm (post-Aug.).

  1. I. Lit.: cohortes, Tac. H. 2, 76 fin.: dextras, Luc. 5, 356: Medos, id. 8, 387; Col. 7, 3, 5; cf. Lampr. Hel. 21.
    1. B. Transf.
      1. 1. Navem, i. e. to unrig, dismantle, Sen. Cons. ad Helv. 17, 6; id. Contr. 3, 15, 9.
        Absol., to lose the rigging of a ship: et si exarmavit, tamen reliquias navigii aptat ad cursum, Sen. Ep. 30, 3; cf. Dig. 14, 2, 2.
      2. 2. (Causa pro effectu.) To deprive of strength, to weaken: serpentem diro veneno, i. e. to render harmless, Sil. 1, 411; so, taurum, Val. Fl. 7, 597: tigres, Manil. 4, 235: aequor (terrae cingentes), Claud. Epigr. 35, 4: Romani exarmati, weakened, Vell. 2, 17 Ruhnk.
  2. II. Trop., to disarm: filium mater Veturia lacrimis suis exarmavit, Flor. 1, 22, 3 Duker.; cf.: nautas mirabili forma, Petr. 105, 7: accusationem, Plin. Ep. 3, 9, 29.