The headword is transmitted as an (otherwise-unattested) imperfect, as if from a)leu/omai. However, it should surely be an aorist, a)leu/ato, from a)le/omai (LSJ entry at web address 1). See ps.-Zonaras s.v., glossing with the aorist e)ce/fugen, and also Hesychius alpha2899, glossing with e)cekli/nen. The source, noted by Latte there, is Homer, Iliad 3.160; see the scholia thereto.