Sense

1. (of time) now, at this time
2. (of the recent past) just now
3. (constrasting what might have been) as it is, as it stands

Examples

• καὶ εἶπεν Ἀδάμ. τοῦτο νῦν ὀστοῦν ἐκ τῶν ὀστέων μου καὶ σὰρξ ἐκ τῆσ σαρκόσ μου. αὕτη κληθήσεται γυνή, ὅτι ἐκ τοῦ ἀνδρὸσ αὐτῆσ ἐλήφθη αὕτη. (Septuagint, Liber Genesis 2:23)
• καὶ εἶπεν ὁ Θεόσ. ἰδοὺ Ἀδὰμ γέγονεν ὡσ εἷσ ἐξ ἡμῶν, τοῦ γινώσκειν καλὸν καὶ πονηρόν. καὶ νῦν μή ποτε ἐκτείνῃ τὴν χεῖρα αὐτοῦ καὶ λάβῃ ἀπὸ τοῦ ξύλου τῆσ ζωῆσ καὶ φάγῃ καὶ ζήσεται εἰσ τὸν αἰῶνα. (Septuagint, Liber Genesis 3:22)
• καὶ νῦν ἐπικατάρατοσ σὺ ἀπὸ τῆσ γῆσ, ἣ ἔχανε τὸ στόμα αὐτῆσ δέξασθαι τὸ αἷμα τοῦ ἀδελφοῦ σου ἐκ τῆσ χειρόσ σου. (Septuagint, Liber Genesis 4:11)
• καὶ εἶπε Κύριοσ. ἰδοὺ γένοσ ἓν καὶ χεῖλοσ ἓν πάντων, καὶ τοῦτο ἤρξαντο ποιῆσαι, καὶ νῦν οὐκ ἐκλείψει ἀπ̓ αὐτῶν πάντα, ὅσα ἂν ἐπιθῶνται ποιεῖν. (Septuagint, Liber Genesis 11:6)
• ἱνατί εἶπασ ὅτι ἀδελφή μου ἐστί̣ καὶ ἔλαβον αὐτὴν ἐμαυτῷ γυναῖκα, καὶ νῦν ἰδοὺ ἡ γυνή σου ἔναντί σου. λαβὼν ἀπότρεχε. (Septuagint, Liber Genesis 12:19)

Source: Ancient Greek entries from Wiktionary