- conventional requirements as to social behavior; proprieties of conduct as established in any class or community or for any occasion.
- a prescribed or accepted code of usage in matters of ceremony, as at a court or in official or other formal observances.
- the code of ethical behavior regarding professional practice or action among the members of a profession in their dealings with each other: medical etiquette.
- the customs or rules governing behaviour regarded as correct or acceptable in social or official life
- a conventional but unwritten code of practice followed by members of any of certain professions or groups
