Leader

1. One who, or that which, leads or conducts; a guide; a conductor.
2. The first, or the principal, editorial article in a newspaper; a leading or main editorial article.
1. One who goes first.
2. One having authority to direct; a chief; a commander.
3. A horse placed in advance of others; one of the forward pair of horses.
4. A pipe for conducting rain water from a roof to a cistern or to the ground; a conductor.
5. A type having a dot or short row of dots upon its face.