The head of state and commander-in-chief of the entire armed forces of the Islamic Republic of Iran, with the authority to dismiss the Iranian president. The Supreme Leader is also the highest-ranking spiritual leader in Iran.

Someone who is recognized by a religious body as having some authority within that body. / The leader of a religious order.

(idiomatic, obsolete) An old maid.

(genetics) The sequence at the 5' end of an mRNA molecule that is not translated into protein.

a person who gives religious or sacred leadership, though not necessarily the leader of a religious organization

(marketing) An item that is sold at or below cost in an effort to stimulate other profitable sales.

A rank in the RAF, between that of flight lieutenant and wing commander, equivalent to an army major

A person, organization, publication, etc. regarded as an authoritative source of new ideas or intellectual trends.

(film) A style of leader (blank introductory portion of film) with numbers marked every foot, counting down from 11 to 3.

(poker) The player with most chips at a given time in a poker tournament.