omerta

English Thesaurus

1. a code of silence practiced by the Mafia; a refusal to give evidence to the police about criminal activities (noun.communication)

hypernym	:	code, codification,
definition	:	a set of rules or principles or laws (especially written ones) (noun.communication)

domain category	:	cosa nostra, maffia, mafia,
definition	:	a crime syndicate in the United States; organized in families; believed to have important relations to the Sicilian Mafia (noun.group)