Why is it called zigzag?

Could you please elaborate on why this particular phenomenon or trend in the cryptocurrency market is colloquially referred to as "zigzag"? Is it due to the erratic and unpredictable nature of price movements, resembling a zigzag pattern on a chart? Or is there a more specific reason rooted in its historical context or technical analysis? I'm curious to understand the etymology behind this term and how it has come to be widely adopted within the industry.