1. the long form of hello, normally used on internet chats like IRC.
2. The call sign of the llama fraternity.

3. The noise an evil animal makes, any animal; but especially crazy ones that aren’t known to make any other noise. So a sheep will not go mwaaa, but a moose might.
4. (if used with more a's, like mwaaaaaaa)The noise teenagers make while dieing of boredom.
dude1: hey man. dude2: Mwaaa. dude3: whats up?
by Dysklyver November 30, 2017
Get the mwaaa mug.