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
μαργῶν, fem. μαργῶσα: rampant, furious, mad, madly eager, insane, frenzied, raving, frantic, greedy, gluttonous (see also: μάργος, μαργάω).
