LSJ
feed on, c. acc., only in pres. part., mostly of granivorous animals, λωτόν, κρῖ λευκόν, πυρὸν ἐρεπτόμενοι, Il. 2.776, 5.196, Od. 19.553, al. ; of men, λωτὸν ἐ. 9.97, AP 9.618 ; βότρυν ib. 7.20 ; of fish, δημὸν ἐ.
feeding on the fat of a carcase, Il. 21.204. — Ep. Verb, used burlesquely by Ar. Eq. 1295, ἐρεπτόμενον τὰ τῶν ἐχόντων ; — Act., ἐρέπτω eat, Nonn. D. 40.306 ; also causal, = τρέφω, Hsch.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
(nach Hesych. ἐρέπτω = τρέφω ; eigtl. rupfen, wie weidende Tiere, bes. Rinder fressen, grasen), nur part. pr., fressen, verzehren, gew. von Pflanzen fressenden Tieren, λωτόν, κρῖ λευκόν, πυρόν, Il. 2.776, 5.196, 7.564, Od. 19.553 ; δημόν, das Fett eines Leichnams, von Fischen, Il. 21.202 ; ψάμμον Opp. H. 1.96, von Menschen, λωτόν Od. 9.97, wie En. ad. 335 (IX.618); βότρυν Simon. 105 (VII.20). Dah. komisch, von Kleonymus, φασὶν αὐτὸν ἐρεπτόμενον τὰ τῶν ἀνέρων Ar. Eq. 1295.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)