Unbranded animal, in Australia

Wikipedia Word definitions in Wikipedia
Within the vernacular of counter-terrorism agents and police officers, a cleanskin is an undercover operative whose identity is not known to the forces he or she is tasked to infiltrate. This is usually because such an agent has not conducted any prior ...

Wiktionary Word definitions in Wiktionary
n. 1 (context Australia English) An unbranded animal. 2 Someone with no prior criminal record, a person with no previous convictions; loosely, someone who has not done anything wrong before, an unblemished character. 3 (context Australia NZ English) An ...