For us (Australians), the word bitch is used to describe an evil-hoe - a female who is nasty, skanky and essentially just mean. Because I'm into hip hop, I have a slightly different definition, that being any faker or shady fuck. i.e. any person who acts big when he's with his boys and then runs scared when shit goes down (whether solo OR with his boys - I knew this one guy who called me and my boys out, then rocked up to my house with his boys and the bitch who called me out sat in the back of the car shaking while the rest of us sorted shit out! Now he's a BITCH!). Anyone who acts like someone they aren't in order to get respect - thats a bitch.