In Australian slang, colloquial terms used to refer to a girl, young woman, or female friend include expressions like "sheila," "mate," or "chick." While "sheila" is a classic historical piece of Australian slang for a woman, modern everyday usage among Australians is often more casual, frequently using terms like "mate" across all genders or opting for standard English descriptions. Traditional slang terms are typically used in lighthearted, informal banter rather than formal dialogue.