Kajira
From wipipedia.org
Kajira is the term for "slave" in John Norman's Gor novels. Slaves in the Gorean lifestyle will refer to themselves as kajirae.
The word is usually seen in the feminine form "kajira" (plural "kajirae"), as most slaves in the Gorean lifestyle are female; the masculine forms are "kajirus" and "kajiri." The construction "kajiras" is incorrect but occasionally seen in third-party writing.