Lewis & Short

ējŭlo, āre (also dep. hejulor, āri, Prisc. 797), v. n. and a. [from the exclamation hei, heu; cf. Doëd. Syn. 3, p. 156].

  1. I. Neutr., to wail, lament, Plaut. Aul. 2, 4, 39; 4, 9, 17; 4, 10, 66; id. Merc. 4, 1, 16; * Cic. Tusc. 2, 7, 19; Gell. 12, 5, 9; Vulg. Job, 35, 9 al.
  2. II. Act., to bewail, lament over a person or thing (post-class.): fortunas meas, App. M. 3, p. 129: sese altius, id. ib. 4, p. 153, 24.