συνδιαβάλλω
From LSJ
κάμψαι διαύλου θάτερον κῶλον πάλιν → bend back along the second turn of the race, turning the bend and coming back for the second leg of the double run, run the homeward course, retrace one's steps
English (LSJ)
A cross together, πάντα [τὰ πλοῖα] ξυνδιέβαλλε τὸν κόλπον Th.6.44. II accuse along with, D.61.12:—Pass., to be accused together, Th.6.61, Lys.12.93, D.39.19.
German (Pape)
[Seite 1006] (s. βάλλω), mit od. zugleich übersetzen; – mit verleumden, anklagen, Thuc. 6, 44. 61; pass., Lys. 12, 93; συνδιαβάλλομαι οὐδὲν αἴτιος ὤν, Dem. 39, 19; Sp., wie Plut.