Wiktionary
self bow
n. (alternative form of selfbow English)
Wikipedia
Self bow
A self bow or simple bow is a bow made from a single piece of wood. Extra material such as horn nocks on the ends, or built-up handles, would normally be accepted as part of a self bow. Some modern authorities would also accept a bow spliced together in the handle from two pieces of wood.
Usage examples of "self bow".
A compound bow might not have survived being trampled, but this self bow and its horsehair cord were none the worse for the experience.