Definitions by Guns is good

Nashing 

Whining obliviously about issues one is not fully aware of does not have a stake in to the point of being a complete ignoranyt pain in the ass

The meeting dragged on by one persons nashing about his co-workers office layout.

Nashing by Guns is good August 25, 2010

Nashing 

complaining continuously and loudly on an issue based on a confused understanding, and minimal knowledge, of the underlying issues.

His nashing is disrupting every meeting, someone needs to teach him to act like a professional.

Nashing by Guns is good August 25, 2010