periclitatio

ἐπάμεροι· τί δέ τις; τί δ' οὔ τις; σκιᾶς ὄναρ ἄνθρωπος → Neverlasting: What is a somebody? What is a nobody? You are a dream of a shadow | Creatures of a day. What is a someone, what is a no one? Man is the dream of a shade.

Latin > English (Lewis & Short)

pĕrīclĭtātĭo: ōnis, f. id.,
I a trying, a trial, experiment: aliquid usu et periclitatione percipere, Cic. N. D. 2, 64, 161.

pĕrīclĭtātĭō, ōnis, f., épreuve, expérience : Cic. Nat. 2, 161.