What is the meaning of Greek?

Alternative letter-case form of Greek (nonsense writing or talk; gibberish).

Alternative letter-case form of Greek (anal sex).

To display a placeholder (instead of text), especially to optimize speed in displaying text that would be too small to read.

To fill a template with nonsense text (particularly the Lorem ipsum), so that form can be focused on instead of content.

To obscure a corporate logo that has not been permitted for use in a production.

Source: wiktionary.org