Australia is not an Aboriginal word (one certainly hopes this is not a school homework question).Australia's name is derived from the Latin phrase terra australis incognita meaning 'unknown south...
The name is derived from the Aboriginal word "naamba", referring to the red-flowering tea tree Callistemon viminalis.
spearlauncher or spear thrower. ie: the tool used to throw a spear.
Encrout is not an aboriginal word.
I'm pretty sure, it translates to "Tall Tree's"