λουτήρ
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)
ῆρος, ὁ, washing or bathing tub, Supp.Epigr.4.263.10 (pl., Stratonicea, i A.D.), CIG2820 A 10 (Aphrodisias), IGRom.4.454 (pl., Pergam., i A. D.), Callix. 2, Moschio ap.Ath.5.207f, LXX Ex.30.18, al.
Greek (Liddell-Scott)
λουτήρ: ῆρος, ὁ, ἀγγεῖον μέγα πρὸς λοῦσιν, λουτρόν, Συλλ. Ἐπιγρ. 2820Α. 10, παρ’ Ἀθην. 199G, 207F.