A spider that builds tangled three-dimensional webs.
Family Theridiidae: many species, class Arachnida
 Example sentencesExamples
-  The American house spider is a common cobweb spider, effectively traps both flying and crawling insects, and is incapable of biting man.
 -  We have a few garage spiders with egg sacks too - I think they're a type of cobweb spider.
 -  The best way to tell the difference between orb-weavers and cobweb spiders is by looking at the web.
 -  Although many spiders are able to chew solid food, cobweb spiders like the black widow feed only on the fluids inside their prey.
 -  Most all cobweb spiders are harmless with the exception of the potentially dangerous widow spiders.