runner Definition

1. Someone or something that runs.

Thesaurus: athlete, sprinter, racer, jogger, marathoner, hurdler, miler.
2. A messenger.

Thesaurus: messenger, courier, express, dispatch rider.
3. A groove or strip along which a drawer, sliding door, curtain, etc slides.
4. Either of the strips of metal or wood running the length of a sledge, on which it moves.
5. A blade on an ice skate.
6. bot.
In certain plants, eg strawberry, creeping buttercup, etc: a stem that grows horizontally along the surface of the ground, producing new plants either from axillary or terminal buds. Technical equivalent stolon.
7. A long narrow strip of cloth or carpet used to decorate or cover a table, dresser, floor, etc.
8. A runner bean.
9. A smuggler.

slang
To leave a place hastily, especially to leave a shop, restaurant, etc without paying; to escape.