What is what does oy mean?

"Oy" is a Yiddish expression that can be used to express a range of emotions or reactions, including dismay, frustration, exhaustion, or even indifference. It is often used as an interjection, similar to "Oh!" or "Oops!" in English. The pronunciation of "oy" is similar to the English word "boy," but with a slightly elongated "o" sound.