uncle
From LSJ
ὦ Θάνατε Θάνατε, νῦν μ' ἐπίσκεψαι μολών → o Death, Death, come now and lay your eyes on me | o death death, come now and look upon me
P. and V. θεῖος, ὁ (Euripides, Orestes 674; Iphigenia in Tauris 930).
Also father's brother: P. πατράδελφος, ὁ.