First, I will tell you what is a CROCHET so you'd better understand what a HERRINGBONE STITCH means later, okay?

CROCHET ---> is a process of creating fabric by means of interlocking loops of yarn, thread, or strands of other materials using a crochet hook. This name was taken from the French word 'crochet' which means small hook.

while HERRINGBONE STITCH ----> is the basic herringbone stitch made up of crosses that aren't cut exactly in the middle, but in quarters.

HERRINGBONE forms the base for many embroideries across the world.

It can also be easily mixed up with or incorporated onto aida fabric.

Herringbone Stitch is also known as Mossoul stitch, Plaited stitch, Catch Stitch, or Witch Stitch.

HOPE THESE WOULD HELP YOU a little bit! :)