νεφρίον
From LSJ
Σκηνὴ πᾶς ὁ βίος καὶ παίγνιον: ἢ μάθε παίζειν, τὴν σπουδὴν μεταθείς, ἢ φέρε τὰς ὀδύνας → All life is a stage and a play: either learn to play laying your gravity aside, or bear with life's pains.
English (LSJ)
τό, Dim. of νεφρός, POxy.108i9 (ii/iii A.D.). II = ἐλαφόβοσκον, Ps.-Dsc.3.69 (nisi leg. νέβρειον).