What is the meaning of Oy?

An exclamation typically expressing mild frustration or expressing feelings of uncertainty or concern.

Alternative spelling of oi (hey, hi, yo)

egg

island

LLC; initialism of osakeyhtiö (limited liability company).

island

today

alas

child

today

Alternative spelling of oigh

grandchild

Alternative form of hoy: expression used to call the attention of somebody: hey!

Alternative form of hoy: expression used as a warning or as a protest: hey!

an informal greeting: hey!

an expression of surprise: hey!

thought

vote

second-person singular imperative of oymak

moon

month

one

Source: wiktionary.org