Lewis & Short

dēpulsĭo, ōnis, f. [depello].

  1. I. A driving off, driving away, repelling, warding off.
    1. A. In gen.: depulsio mali, Cic. Fin. 2, 13, 41: doloris, id. ib. 5, 7, 17: servitutis, id. Phil. 8, 4, 12.
    2. B. Esp. in rhetor., a defence against a charge, Cic. Inv. 2, 26, 79; 1, 10, 13; Cels. ap. Quint. 3, 6, 13; Quint. ib. § 17 al.
  2. * II. A lowering, sinking down of the eyes: luminum, Cic. Univ. 14, 42.