arachnerd UK /əˈɹækˌnɜːd/US /əˈɹækˌnɝːd/ noun1 •(old-fashioned, rare) A person who spends a lot of time on the World Wide Web.Why do I find these Internet neologisms so interesting? Guess it’s because I’m a bona-fide arachnerd, a person that spends way too much time either surfing the Web or fussing with their home page. — 2003 formsarachnerds