authority

authority is a Noun

Definition:

[1] Legal or rightful power; a right to command or to act; power exercised buy a person in virtue of his office or trust; dominion; jurisdiction; authorization; as, the authority of a prince over subjects, and of parents over children; the authority of a court. Thus can the demigod, Authority, Make us pay down for our offense. Shak. By what authority doest thou these things Matt. xxi. 23.

[2] Government; the persons or the body exercising power or command; as, the local authorities of the States; the military authorities. [Chiefly in the plural.]

[3] The power derived from opinion, respect, or esteem; influence of character, office, or station, or mental or moral superiority, and the like; claim to be believed or obeyed; as, an historian of no authority; a magistrate of great authority.

[4] That which, or one who, is claimed or appealed to in support of opinions, actions, measures, etc. Hence:

[5] Testimony; witness. "And on that high authority had believed." Milton.

[6] A precedent; a decision of a court, an official declaration, or an opinion, saying, or statement worthy to be taken as a precedent.

[7] A book containing such a statement or opinion, or the author of the book.

[8] Justification; warrant. Wilt thou be glass wherein it shall discern Authority for sin, warrant for blame. Shak.