What does BOWSCREW mean?

BOWSCREW meaning in Urban Dictionary

Bowscrew is a simple name fond of the small screw that keeps the "bow" to the remaining couple of eyeglasses.Myself (Eric) and my other creator (Brandon) utilize this word to describe someone who is a "TOOL", except we go on it to a different amount. Exactly what "tool" is the most ineffective of all the tools? what about the tiny screw that..... you can get the purpose. even though it just weren't indeed there... the specs works alright!