Cobber
Australian SlangDefinition
An Australian slang term for a friend or mate; a companion or pal, now somewhat old‑fashioned.
Examples
"Cheers for the help, cobber—couldn’t have fixed the ute without you."
"He’s an old cobber of mine from uni; we’ve stuck together through thick and thin."
"How are you going, cobber? Haven’t seen you since the last footy match."