Definitions
1.verbTo follow the trail of.
2.verbTo follow the history of.
3.verbTo draw or sketch lightly or with care."He carefully traced the outlines of the old building before him."
4.verbTo copy onto a sheet of paper superimposed over the original, by drawing over its lines.
5.verbTo copy; to imitate.
6.verbTo walk; to go; to travel.
7.verbTo walk over; to pass through; to traverse.
8.verbTo follow the execution of the program by making it to stop after every instruction, or by making it print a message after every step.