Pathway (noun)

1. A track or route for walking, especially one that is specially prepared or marked.
2. A way or route for something to travel or move through.
3. A series of steps or stages that lead to a particular outcome or result.

Origin:

From the old english pathweg, from path + weg "way".

Examples:

1. The pathway through the park was lined with trees.
2. The nerve impulses travel through pathways in the brain.
3. The pathway to becoming a doctor is long and difficult.
4. She walked along the pathway to the beach.
5. The pathway was illuminated by lanterns at night.