[Retric]

Words gain meaning based on what the largest group of people think. If 90% of the population think grapes refers to grapes including the stem and you try and restrict the definition further the only way to back that up is an appeal to authority. http://en.wikipedia.org/wiki/File:Abhar-iran.JPG

PS: Most economists accept that many completely unregulated market tends to monopoly's which try to extract rents. However, once a monopoly shows up they no longer accept that it's a 'free market' so the term 'free market' does not mean what happens when government does not interfere with a market. After that it get's complected as to where the line is drawn between free market and something else, however the bar is surprisingly high as for example moderate sin taxes don't prevent free markets.