to remove (something that has been recorded) from a tape (such as a videotape or audiotape) or a computer disk; also : to remove recorded material from (a tape or disk)
to remove (something written) by rubbing or scraping so that it can no longer be seen
a reference work (such as a book, series of books, Web site, or CD-ROM) that contains information about many different subjects or a lot of information about a particular subject