n. One who leads, guides, conducts, directs, or controls; a director or conductor; a chief or commander.n. One who is first or most prominent in any relation; one who takes precedence by virtue of superior qualification or influence; a recognized principal or superior: as, leaders of society; a leader of the bar.n. In the Meth. Epis. Ch., one who has charge of a “class,” which he meets at stated times, and over which he exercises a quasi-pastoral supervision. See class, n., 3 .n. In music:n. A conductor or director.n. The principal first-violin player in an orchestra (concert-master), the principal cornettist in a band, or the principal soprano in a chorus.n. That which leads or conducts; something that guides the course of a thing, or conducts to it.n. In surveying, the foremost of the two chain-carriers.n. A ring or gripper used for leading cattle, passed through the septum of the nose.n. That which precedes; something that has a leading or foremost place, whether in actual position or in importance.n. The principal wheel in a set of machinery.n. A principal editorial article in a newspaper; one of the longer articles in a newspaper appearing as its own utterances or expressions of editorial views, whether written by the ostensible editor or by leader-writers or contributors.n. A sinew; a tendon: as, the leaders of the fingers or toes.n. Something offered as a special attraction to customers; a leading “bargain.”n. In botany, the terminal shoot of an excurrent trunk, commonly forming the apex of a cone-shaped tree, as in the fir and the larch.n. = Syn. 1 and 2. Commander, Head, etc. See chief.n. A plumber.n. n. The first player on any trick in a game of cards; the player who sits on the dealer's left.