νεφρίον

ἐξ ὀνύχων λέοντα τεκμαίρεσθαι → judge by the claws, judge by a slight but characteristic mark, small traits give the clue to the character of a person, deduce something from a small indication, identify a lion from its claws

Click links below for lookup in third sources:

Full diacritics: νεφρίον	Medium diacritics: νεφρίον	Low diacritics: νεφρίον	Capitals: ΝΕΦΡΙΟΝ
Transliteration A: nephríon	Transliteration B: nephrion	Transliteration C: nefrion	Beta Code: nefri/on

English (LSJ)

τό, Dim. of νεφρός, POxy.108i9 (ii/iii A.D.). II = ἐλαφόβοσκον, Ps.-Dsc.3.69 (nisi leg. νέβρειον).