κοῦ
From LSJ
Ὅσον ζῇς, φαίνου, μηδὲν ὅλως σὺ λυποῦ· πρὸς ὀλίγον ἐστὶ τὸ ζῆν, τὸ τέλος ὁ χρόνος ἀπαιτεῖ. → While you live, shine; have no grief at all; life exists only for a short while, and time demands its toll.
English (LSJ)
κου, Ion. for ποῦ, που. κοῦα· ἐνέχυρα, and κουάσαι· ἐνεχυριάσαι, Hsch.; cf. κοῖον, κῷα. κούαγμα· σκῆμα, Id. κούαμα· μέλαν (Lacon.), Id. (fort. κουάνια ( κυάνεα) · μέλανα).
Greek (Liddell-Scott)
κοῦ: κου, Ἰων. ἀντὶ ποῦ, που.
French (Bailly abrégé)
ion. c. ποῦ.
Greek Monotonic
κοῦ: κου, Ιων. αντί ποῦ, που.
Russian (Dvoretsky)
κοῦ: ион. = ποῦ.
Dutch (Woordenboekgrieks.nl)
κοῦ, κου Ion. voor ποῦ, που.