Myth: Kangaroo was an answer meaning “I don’t know” when Australian Aboriginal people were asked by newly arriving Europeans about the animal. Here’s how it unfolded.

When Governor Arthur Phillip arrived with the First Fleet, in 1788, in what would become Sydney, he had with him an Aboriginal wordlist compiled by Joseph Banks, chief botanist on Captain James Cook’s first voyage, 18 years earlier, exploring Australia’s east coast.

Where did the word ‘outstation’ come from?

Banks’ New Holland Language was expected to aid communication with the indigenous people. It included the word kangaroo – Banks’ record of what the Aboriginal people called the largest of the quadrupeds the European party had observed when Cook’s coral-damaged ship was beached for repairs, in the far north of what is now Queensland. The word and animal skins had been taken back to England and a commissioned painting of it was exhibited in 1773, making this unusual animal, and its name, well known.

On encountering the Aboriginal peoples of the Sydney area, Phillip’s party used the word kangaroo in reference to such an animal, and were surprised to find this met with puzzlement. Had Cook misunderstood?

Only later did the Europeans realise the language of the area had different names for each species of kangaroo and that the indigenous people spoke more than 250 different languages at the time of European settlement.

And gangurru? This comes from the traditional language of the Guugu Yimidhirr people, of Far North Queensland – with whom in 1770 Cook and Banks had had contact – meaning “large black kangaroo”, referring to but one species, the eastern grey. In English, this term came to be used to refer generically to kangaroos. Anthropological research in 1972 on the Guugu Yimidhirr documented the same word – confirming Banks’ long-ago observations.

Australian English has developed related compounds including “roo bar”, the protective metal grille fitted to the front of a motor vehicle, and “kangaroo paw”, a native plant with long, paw-like flowers, the term also used to denote repetitive strain injury, in reference to the similarity between one’s wrist in such a condition and the animal’s paw.

“Kangaroo” has long since become global English: a kangaroo court, first recorded in American English in 1853, reflects the irrational, unpredictable conduct of frontier tribunals during the gold rush, while in kangaroo closure, a measure from 1911 coined in British parliament, certain amendments are selected to be “leapt over”.