1.noun- an abrasive or loud mouth.
2.verb- to talk incessantly without purpose.
3.adjective- meaning overly loud, annoying,or abrasive.
Generally from the German word mund
1. noun - You shoot that mund off too much.
2. verb- If you continue to mund at us, we'll have to drop you off somewhere.
3. adjective- You've been so mund all night that our ears are tired.