Definition of Freeman
A person in the possession and enjoyment of all the civil and political rights accorded to the people under a free government.
In the Roman law, it denoted one who was either born free or emancipated, and was the opposite of "slave.” In feudal law, it designated an allodial proprietor, as distinguished from a vassal or feudal tenant. (And so in Pennsylvania colonial law.) In old English law, the word described a freeholder or tenant by free services; one who was not a villein. The term later referred to a member of a city or borough having the right of suffrage, or a member of any municipal corporation invested with full civic rights.
That's the definition of Freeman in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.