1. (n.) A race course: the ground run over.

2. (n.) A running; full speed; a rapid course.

3. (n.) General course of action or conduct in life, or in a particular part or calling in life, or in some special undertaking; usually applied to course or conduct which is of a public character; as, Washington's career as a soldier.

4. (n.) The flight of a hawk.

5. (v. i.) To move or run rapidly.