The meaning of social ethics is a set of rules or guidelines, based around ethical choices and values, that society adheres to. Many of these rules are often unspoken and instead expected to be followed.
Social ethics are not supposed to be a detailed list of rules to be applied in any given situation. They are meant to act as a guide by setting the ground rules for what society deems acceptable. The welfare of society as a whole is put ahead of the interests of any individual, and this helps to ensure that everyone is kept accountable by each other.