omertà or omerta /ō-merˈtə/

1. The Mafia code of honour requiring silence about criminal activities and stressing the disgrace of informing
2. A criminal conspiracy of silence

• chain of command
• chain of office
• chain pier
• chain piers
• chainplates
• chain printer
• chain printers
• chain pump
• chain pumps
• chain reaction
• chain reactions
• chain reactor
• chain reactors
• chain rule
• chain rules
• chains
• chainsaw
• chainsaws
• chainshot
• chainshots
• chain-smoke
• chain-smoked
• chain-smoker
• chain-smokers
• chain-smokes