κίτρον
From LSJ
λόγος γέ τοί τις ἔστι τῶν γεραιτέρων, ὅσ' ἂν ἀνόητ' ἢ µῶρα βουλευσώµεθα, ἅπαντ' ἐπὶ τὸ βέλτιον ἡµῖν ξυµφέρειν → there is in fact a saying among the elders, that whatever thoughtless, stupid decisions we make, they all turn out for the best for us
English (LSJ)
τό,
A fruit of the κιτρέα, citron, cited as Lat. word by Pamphil. ap.Ath.3.85c, cf. Gal.Vict.Att.10.