Sense

1. (+ genitive), about, concerning, because of

Examples

• καὶ ἤτασεν ὁ Θεὸσ τὸν Φαραὼ ἐτασμοῖσ μεγάλοισ καὶ πονηροῖσ καὶ τὸν οἶκον αὐτοῦ περὶ Σάρασ τῆσ γυναικὸσ Ἅβραμ. (Septuagint, Liber Genesis 12:17)
• καὶ ἐνετείλατο Φαραὼ ἀνδράσι περὶ Ἅβραμ συμπροπέμψαι αὐτὸν καὶ τὴν γυναῖκα αὐτοῦ καὶ πάντα, ὅσα ἦν αὐτῷ. (Septuagint, Liber Genesis 12:20)
• περὶ δὲ ἡλίου δυσμὰσ ἔκστασισ ἐπέπεσε τῷ Ἅβραμ, καὶ ἰδοὺ φόβοσ σκοτεινὸσ μέγασ ἐπιπίπτει αὐτῷ. (Septuagint, Liber Genesis 15:12)
• περὶ δὲ Ἰσμαὴλ ἰδοὺ ἐπήκουσά σου. καὶ ἰδοὺ εὐλόγηκα αὐτὸν καὶ αὐξανῶ αὐτόν καὶ πληθυνῶ αὐτὸν σφόδρα. δώδεκα ἔθνη γεννήσει καὶ δώσω αὐτὸν εἰσ ἔθνοσ μέγα. (Septuagint, Liber Genesis 17:20)
• καὶ εἶπεν αὐτῷ. ἰδοὺ ἐθαύμασά σου τὸ πρόσωπον καὶ ἐπὶ τῷ ρήματι τούτῳ τοῦ μὴ καταστρέψαι τὴν πόλιν, περὶ ἧσ ἐλάλησασ. (Septuagint, Liber Genesis 19:21)

Source: Ancient Greek entries from Wiktionary