LSJ
Ep., used by Hom. only in Ep. 3 pl. impf. ἐστιχόωντο ; (< *στίξ, στείχω) : — march in rows or ranks, esp. of soldiers, Il. 2.92, 4.432, etc. ; of ships in line, 2.516, 602, etc. ; of herdsmen with their herds, 18.577; of cattle, Theoc. 25.126; κῆρας, ὅσαι στιχόωνται ἐπ’ ἀγρούς Orph. L. 272; of two persons marching, Il. 3.266, 341. — Act. στιχάει is prob. in Il. 15.635 (cf. ὁμοστιχάω); later Ep. στιχόωσι stand in rows, Arat. 191, A.R. 1.30, Mosch. 2.142; part. neut. στιχόωντα Arat. 372.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)