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Λύπης ἰατρός ἐστιν ὁ χρηστὸς φίλος – A true friend is grief's physician.
Ar. κόκκυξ, ὁ.
the sound of the cuckoo: Ar. κόκκυ.
cry cuckoo, verb intransitive: Ar. κοκκύζειν.