Where does “ჯანთხოზაჲ” come from?

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

ჯანთხოზაჲ (Laz): to run after downwards