bylaw

noun
  1. A rule or regulation made by a local authority or corporation to govern its own affairs. noun
    The city council passed a new bylaw to regulate noise levels in residential areas.
    According to the company's bylaws, the board of directors must meet at least four times a year.
  2. A rule made by a company or society to control the actions of its members. noun
    The club's bylaws require all members to pay an annual fee.
    Violating the bylaws of the association can lead to suspension or expulsion.