noun:

1. In weft knitting, a single row of loops connecting the loops of the preceding and following rows.
2. The itinerary of a race.
3. A racecourse.
4. A row of bricks or blocks.
5. Menses.
6. The lowest square sail in a fully rigged mast, often named according to the mast.
7. Any ordered process or sequence of steps.
8. The intended passage of voyage, such as a boat, ship, airplane, spaceship, etc.
9. The succession of one to another in office or duty; order; turn.
10. A golf course.
11. The path taken by a flow of water; a watercourse.
12. A programme, a chosen manner of proceeding.
13. A row or file of objects.
14. A normal or customary sequence.
15. A learning programme, whether a single class or a major area of study.
16. A sequence of events.
17. The direction of movement of a vessel at any given moment.
18. A row of material that forms the roofing, waterproofing or flashing system.
19. A stage of a meal.
20. A path that something or someone moves along.
21. The trajectory of a ball, frisbee etc.
22. A treatment plan.
23. One or more strings on some musical instruments (such as the guitar, lute or vihuela): if multiple, then closely spaced, tuned in unison or octaves and intended to played together.

verb:

1. To cause to chase after or pursue game.
2. To run or flow (especially of liquids and more particularly blood).
3. To run through or over.
4. To pursue by tracking or estimating the course taken by one's prey; to follow or chase after.

adverb:

1. Alternative form of of course.