"Ock" - noun. an Americanized version of the Arab word "Ahkhee" which means (literally) "my brother". "Ahkhee" is difficult to say unless you are a native Arabic speaker and thus it is pronounced "Ock-kee", which then gets shortened to "Ock."
it is a term used mostly by African Americans and African American Muslims in urban areas.
Whaddup ock, whuz good?
...chillin ock, how you livin?