cobweb

1. (figurative) Something thin and unsubstantial, or flimsy and worthless; valueless remainder.Examples: "The dust and cobwebs of that uncivil age."; "Once the cobwebs of a lack-lustre first half were blown away, Spurs were irresistible and Arsenal were simply unable to cope with the power of Mousa Dembele in midfield and the creation and running of Christian Eriksen and Dele Alli - combined with the inevitable goalscoring prowess of Kane."figuratively

2. (Internet slang, rare) A web page that either has not been updated for a long time, or that is rarely visited.Internetrare

3. (informal, usually in the plural) fuzzy inexact memories.Examples: "I washed my face, trying to get the cobwebs of hard sex and an alcohol-induced sleep out of my head"; ""Hey," she said. "You know what? After you call the hospital, why don't you go for a run? It'll help clear out the cobwebs, get rid of some of that tension. Then go back, take a nice hot shower, and―" "There's no shower here. Remember?" "Oh, right. A nice hot bath, then. Even better. And eat breakfast, Caelum. You need to remember to eat.""; "Veyz mir, meaning something like “Oh . . . my!,” was a Yiddish expression that I had not employed for a long, long time. Yet in the cobwebs of my memory, that expression was still lurking inside. How interesting!"informalplural-normally