n.
1.a line leading to a place or point
2.the spatial relation between something and the course along which it points or moves
3.a general course along which something has a tendency to develop
4.something that provides direction or advice as to a decision or course of action
5.the act of managing something
6.a message describing how something is to be done
7.the act of setting and holding a course
8.a formal statement of a command or injunction to do something
9.the concentration of attention or energy on something