Definition of wayback machine
: a device for traveling into the past <The past always seems a little better than the present, so who wouldn't want to take a trip in the wayback machine? — Steven Zeitchik> <He sort of resembles a grown-up version of Sherman, the cartoon character from “Rocky and His Friends” who used to join the dog Peabody on travels through history in “the wayback machine.” — Joel Selvin>
First Known Use of wayback machine
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