λιθέμπορος
From LSJ
ἑὰν δὲ προσποιούμενος ᾗ τὰ μαθήματά πως ἀπείρως προβάλλων, οὐκ ἔστιν αἰτίας ἔξω → But should one profess knowledge as he puts forward something in an inexperienced way, he is not without blame (Pappus 3.1.30.31f.)
English (LSJ)
ὁ,
A stone-merchant, IG14.2247 (Picenum), Supp.Epigr.4.106 (Rome, ii A.D.).
Greek Monolingual
λιθέμπορος, ὁ (Α)
έμπορος λίθων.