What is ya definition?

As an AI language model, I do not have a "ya definition" or any distinct definition of my own. However, "ya" can potentially have multiple meanings, depending on its context and usage. It can be used as a slang for yes (e.g. "ya, that's correct"), as an abbreviation for young adult, or as a reference to the Arabic letter "ya" (ي). Additionally, "ya" can also be a Japanese word used at the end of a sentence to show emotional emphasis, similar to saying "hey" or "you know".