A slave name is the personal name given by others to an enslaved person, or a name inherited from enslaved ancestors. Modern use of the term applies mostly to African-Americans and West Indians descended from enslaved Africans who retain the name given to their ancestors by the enslavers.
In Rome slaves were given a single name by their owner. A slave who was freed might keep his or her slave name and adopt the former owner's name as a praenomen and nomen. As an example, one historian says that "a man named Publius Larcius freed a male slave named Nicia, who was then called Publius Larcius Nicia."
"You must remember that slave-names will keep you a slave in the eyes of the civilized world today. You have seen, and recently, that Africa and Asia will not honor you or give you any respect as long as you are called by the white man's name."
"You are still called by your slave-masters' names. By rights, by international rights, you belong to the white man of America. He knows that. You have never gotten out of the shackles of slavery. You are still in them."