caepicium
From LSJ
Ἔοικα γοῦν τούτου γε σμικρῷ τινι αὐτῷ τούτῳ σοφώτερος εἶναι, ὅτι ἃ μὴ οἶδα οὐδὲ οἴομαι εἰδέναι → I seem, then, in just this little thing to be wiser than this man at any rate, that what I do not know I do not think I know either
Latin > French (Gaffiot 2016)
cæpĭcĭum, ĭī, n. (cæpa), oignon, tête d’oignon : Arn. 5, 1.