1. page up - Noun
2. page up - Verb
page up (third-person singular simple present pages up, present participle paging up, simple past and past participle paged up)
(computing) To scroll up to the previous page of content.
When I paged up or down, the text would sometimes get mangled and duplicated.
Page Up (plural Page Ups)
(computing) A keyboard key that when pressed scrolls up to the previous page of content.