What's exactly Holla mean? And how can I use this word in a conversation?
I hear this word before, like "I just holla back", but I don't know exactly what's that meaning, so somebdy can help me? Thanks!

Question

Answer

My advice is never to use it. At the risk of offending someone, it is really only used by black people.  It is based off the word holler.  This means to call or yell.  You can use holler but holla would sound rediculous coming from you.  Holler isn't used exactly like holla.  It is used more like yell.

Answer

http://www.urbandictionary.com/define.php?term=holla
check the link