νεφρίον
From LSJ
καὶ λέγων ὅτι Πεπλήρωται ὁ καιρὸς καὶ ἤγγικεν ἡ βασιλεία τοῦ θεοῦ· μετανοεῖτε καὶ πιστεύετε ἐν τῷ εὐαγγελίῳ → declaring “The time has been accomplished and the kingdom of God is near: start repenting and believing in the gospel!” (Μark 1:15)
English (LSJ)
τό, Dim. of νεφρός, POxy.108i9 (ii/iii A.D.).
II = ἐλαφόβοσκον, Ps.-Dsc.3.69 (nisi leg. νέβρειον).