What do you call a long thread-like structure of wool fibre or silk fibre?
A long thread like structure of a fibre is called a yarn. The most common plant fibre is cotton , which is typically [3] spun into fine yarn for mechanical weaving or knitting into cloth. yarn may be spun from camel , yak , possum , musk ox , vicuña , cat , dog , wolf , rabbit , or bison hair, and even chinchilla as well as turkey or ostrich feathers.