What does the aussi slang jacko mean?

Answer 1

According to the " Oxford English Dictionary " the word " JACKO " dates back to the mid - 1600′s as a Flemish approximation of the Bantu word " monkey. " By the early 1800′s Jacko Maccacco, a famous fighting monkey, could be found on display in Westminster Pit, a notorious London arena for dog fights. The word has become part of the common vernacular and it eventually became a Racist shorthand for Blacks.

Answer 2

In Australian slang, "jacko" is a term used to refer to someone named Jack. It is a casual and colloquial way of addressing or referring to a person named Jack.