Lewis & Short

vespĕrūgo, ĭnis, f. [vesper].

  1. I. The evening-star, Plaut. Am. 1, 1, 119; Vitr. 9, 4; cf. Quint. 1, 7, 12; and Fest. p. 368 Müll.; Mart. Cap. 8, 883.
  2. * II. A bat, Tert. Anim. 32.