AIR-Threads, in Natural History, a name given to the long filaments, so frequently seen in autumn floating about in the air.
These threads are the work of spiders, especially of that species called the long-legged field-spider; which having mounted to the summit of a bush or tree, darts from its tail several of these threads, till one is produced capable of supporting the creature in the air: on this it mounts in quest of prey, and frequently rises to a very considerable height. See ARANEA.