Leader /(?)/

Lead·er

Leader

n.
  1. One who, or that which, leads or conducts; a guide; a conductor. (Mus.) [Obs. or R.]
    He forgot to pull in his leaders, and they gallop away with him at times.
    — Hare.
  2. A pipe for conducting rain water from a roof to a cistern or to the ground; a conductor. (Fishing)
  3. The first, or the principal, editorial article in a newspaper; a leading or main editorial article.
  4. A type having a dot or short row of dots upon its face. (Print.)