ποιός
From LSJ
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
English (LSJ)
ά, όν, indef. Adj.
A of a certain nature, kind, or quality, Pl.Lg. 770d, Arist.Cat.10a27, etc.; esp. joined with τις, Pl.Sph.262e, al., Arist.Cat.8b25; ποιὰ ἄττα Pl.R.438b, al.; τὸ ποιόν, = ποιότης, Arist. Metaph.1083a11, al.; μοναχῶς μὲν ἡ ποιότης λέγεται κατ' αὐτοὺς τοὺς Στωϊκούς, τριχῶς δὲ ὁ ποιός Stoic.2.129, cf. 131,168, al.: pl., τὰ τοιαῦτα π. Iamb.Comm.Math.14; τὸ π. μέλος such-and-such, PMag.Par.1.327.
