1. any nasty fight between women, not necessarily involving physical violence
2. two women fighting. Often involving manoeuvres men would consider out of bounds e.g. pulling hair, scratching, etc.
Donna: Apparently there was a big scrag fight between Steph and that woman doctor.
Callum: Yeah, next time you have a scrag-fight, tell me, and I'll break out the video camera and then we'll YouTube it.