Origin: 1275–1325; Middle English coppeweb, derivative of Old English -coppe spider (in ātorcoppe poison spider); cognate with Middle Dutch koppe;see web
1323, first element is O.E. -coppe in atorcoppe "spider," lit. "poison-head" (see attercop). Cob for "a spider" was an old word nearly dead even in dialects when J.R.R. Tolkien used it in "The Hobbit" (1937).