track

1. track (noun) — sense 1

Definition: A mark left by something that has passed along.

Example: Follow the track of the ship.

2. track (noun) — sense 2

Definition: A mark or impression left by the foot, either of man or animal.

Example: The fox tracks were still visible in the snow.

3. track (noun) — sense 3

Definition: The entire lower surface of the foot; said of birds, etc.

4. track (verb) — sense 4

Definition: To continue over time.: To observe the (measured) state of a person or object over time.

Example: We will track the raven population over the next six months.

5. track (verb) — sense 5

Definition: To continue over time.: To monitor the movement of a person or object.

Example: Agent Miles has been tracking the terrorist since Madrid.

6. track (verb) — sense 6

Definition: To continue over time.: To match the movement or change of a person or object.

Example: My height tracks my father's at my age, so I might end up as tall as him.