ETYM Old Eng. also garbash, perh. orig., that which is purged or cleansed away.
Food that is discarded (as from a kitchen); SYN. refuse, food waste, scraps.

1. Incorrect or corrupted data.
2. Gibberish displayed on screen, either due to faulty hardware or software or because a program is unable to display a file’s content. For example, an executable file is not meant to be displayed by a text editor and so is indecipherable on screen.