illustramentum
From LSJ
κοινὸν τύχη, γνώμη δὲ τῶν κεκτημένων → good luck is anyone's, judgment belongs only to those who possess it
Latin > English (Lewis & Short)
illustrāmentum: (inl-), i, n. illustro,
I an embellishment, ornament of speech: pronuntiationis, Quint. 11, 3, 149.
Latin > French (Gaffiot 2016)
illūstrāmentum (inl-), ī, n., ornement : Quint. 11, 3, 149.