1. A line or procedure that has abrupt or sharp alternating right and left turns: Marcus drove his car down the road from the mountain in sharp zigzags
2. Etymology: from French and German Zickzack, "an alteration of direction."

The shape of a line which is represented by sharp turns in different directions: Tom and Becky found themselves walking in a zigzag through the woods because they didn't really know their way back to the camp!

1. To move along in a back and forth or right to left procedure: The trail up the mountain was zigzagging all the way to the top.
2. Etymology: from French which came from German Zickzack, "the alternation of directions" which may have applied to fortifications.

To progress forward by moving in alternating and abrupt directions: Tom had to zigzag across the parking lot in order to avoid all the puddles of water which collected after the downpour the night before.