πελαγόσδε
From LSJ
ἐάν μή διδάξητε περί ἀρετὴς τούς τό ἀργύριον κλέψαντας, οὐ ταξόμεθα οἱ ὁπλῖται → if you don't teach those who have stolen money a lesson on moral virtue, we, the hoplites, will not line up
English (LSJ)
Adv.
A to, into, or towards the sea, A.R.4.1233.
Greek (Liddell-Scott)
πελᾰγόσδε: Ἐπίρρ., πρὸς ἢ εἰς τὸ πέλαγος, Ἀπολλ. Ρόδ. Δ. 1233.