Runner

n. [From run.] 1. One who, or that which, runs; a racer.

2. Hence, one employed to solicit custom, as for a steamboat, railroad, &c.
3. (Bot.) A slender branch running along the ground, as in the strawberry, and forming at its extremity roots and a young plant.
4. One of the stones of a mill. Mortimer.
5. A rope used to increase the mechanical power of a tackle. Totten.
6. One of the curved pieces on which a sled or sleigh slides.
7. (Founding.) A channel on the top of a mold, into which the liquid metal is poured, and leading to one or more sprues.