wayback machinenoun [ C ]
/ˈweɪ.bæk ˌmə.ʃiːn//ˈweɪ.bæk ˌmə.ʃiːn/UShumorous a way of going back in time to the past:
I had to jump into the wayback machine and call up my incredibly rusty and outdated geek lingo.
a way of searching internet archives (= old documents, websites, etc.):
The wayback machine at archive.org shows virtually no history, which is odd if your blog was as popular as you claim.