Lewis & Short

Choerĭlus, i, m., = Χοιρίλος, a wretched Greek poet, in the train of Alexander the Great, Hor. Ep. 2, 1, 233; id. A. P. 357; Curt. 8, 5, 8; Aus. Ep. 16, 3.
After him, or another poet of the same name (cf. Hor. Ep. 2, 1, 232), is named Choerĭlīum (or -ēum) metrum, a dactylic species of verse, Serv. Centim. p. 1820 P.; Victorin. p. 2558 ib.