from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A long, loud call used to attract attention when at a distance, mainly done in the Australian bush.
- n. A short distance; hailing distance.
- v. To make such a call.
- interj. Used to attract someone's attention.
From Dharug guuu-wi adopted into English by white settlers in Australia from 1790. (Wiktionary)