Where does “ჯეჭორდუნ” come from?

ჯეჭორდუნ (Laz) comes from Laz ჯე-, from Laz დვ-, from Laz -აშე — produces the tool name by appending it to the verb stem.

ჯეჭორდუნ (Laz): to break from top to bottom due to the weight on it