ἐπουρεω

From LSJ

ἐγώ εἰμι τὸ ἄλφα καὶ τὸ ὦ, ὁ πρῶτος καὶ ὁ ἔσχατος, ἡ ἀρχὴ καὶ τὸ τέλος → I am the Alpha and the Omega, the first and the last, the beginning and the end

Source

Russian (Dvoretsky)

ἐπουρεω: (на что-л.) мочиться rst., Diog. L.