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Shol'va is the Goa'uld word for traitor. It refers to a Jaffa who has betrayed the Goa'uld he is in service to. The word also has heretical conotations, as the Goa'uld serve as the Jaffa's gods. Often times, Shol'va was the name used by the Goa'uld to address Teal'c after he betrayed Apophis.(SG1: "Bloodlines")
http://stargate.wikia.com/wiki/Shol%27va