oi
From LSJ
ἔνδον σκάπτε, ἔνδον ἡ πηγὴ τοῦ ἀγαθοῦ καὶ ἀεὶ ἀναβλύειν δυναμένη, ἐὰν ἀεὶ σκάπτῃς → Dig within. Within is the wellspring of Good; and it is always ready to bubble up, if you just dig | Look within. Within is the fountain of the good, and it will ever bubble up, if thou wilt ever dig.
Latin > English (Lewis & Short)
oi: interj., an exclamation of complaint, of one weeping:
I Ph. I intro nunc jam. Do. Oi! ei! Ter. Eun. 4, 4, 47: oi! hui! id. Phorm, 4, 3, 58.
Latin > English
oi INTERJ :: oh! ah!