The chief law officer of a country or state WordNet 3.0 & Open English WordNet

In most common law jurisdictions, the attorney general or attorney-general Wikipedia

The principal legal officer of a government Wikipedia Disambiguation

A major government officer throughout the English-speaking world, generally responsible for interpreting the law for the head of government and executive department and functioning as chief prosecutor, with the ability to bring civil and criminal actions directly. Wiktionary

Major government officer. Wiktionary (translation)