One who goes first. / One having authority to direct. / One who leads a political party or group of elected party members; sometimes used in titles.

plural of leader

A surname originating as an occupation for a person who led a horse and cart. / A river in north Canterbury, New Zealand, which joins the (Canterbury) Waiau.

plural of Leader

(business) Typical of, or befitting, a leader; capable of leading a project or a team.

Alternative form of ringleader

a person, group, or country, deemed superior in their field. / the leader of a country, such as the president, prime minister, etc.

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

plural of destroyer leader

(military, nautical) a warship, a type of destroyer used to lead a division, flotilla or squadron at sea and in combat, a heavy destroyer variant with larger displacement for command and control.