yeah, it's on an ALICE fame.

Pigeon string is usually leather lace like what is used as boot lace. I will save old shoelaces, nylon cord, leather lacing, etc, and refer to that as "pigeon string" as well. It is an old term from the wild west days, to the best of my knowledge.

It's very handy stuff to have around. I have used pigeon string to tie the tops of saplings together when making an Apache Wickiup. Tying things to my backpack. Basically, it is the old name for what we use paracord for today.