Lewis & Short

† dī-verbĭum, ii, n. [verbum],

  1. I. the colloquial part of a comedy, the dialogue, Liv. 7, 2; Petr. 64, 2; Diom. p. 489 P. al.
  2. II. Transf., in gen., a comedy.
    Plur.,     Aus. Idyll. 4, 61.