Lewis & Short

hostĭcus, a, um, adj. [hostis].

  1. I. Of or belonging to an enemy, hostile (mostly poet. and in post-Aug. prose; not in Cic. or Cæs.): ager, Liv. 44, 13: tellus, Ov. P. 1, 3, 65: moenia, Hor. C. 3, 2, 6: vindemia, Ov. F. 4, 893: manus, Plaut. Capt. 2, 1, 49; 2, 2, 61: ensis, Hor. S. 1, 9, 31: incursiones, Col. praef. § 19: tumultus, Flor. 3, 10, 17.
    In neutr. as subst.: hostĭcum, i, the enemy’s territory: castra in hostico incuriose posita, Liv. 8, 38, 2: raptae ex hostico messes, Plin. Pan. 29, 3: transire in hosticum, Eum. Pan. ad Constant. 13; also enmity: hosticum spirare, Tert. Mag. 35.
  2. II. Of or belonging to a stranger, strange, foreign: hosticum hoc mihi domiciliumst, Athenis domus est, Plaut. Mil. 2, 5, 40.