Noun: A female hater, to a degree above the common case. Typically a female who would talk foul of another female because she secretly desires but lacks the qualities of that person.
This can also be applied to a male in a derogatory way, equating him to being a jealous bitch.
Hateress 1: "Oh my god, Becky, look at her butt! It's just so big! It's disgusting! She must be one of those rap guy's girlfriends..."
Hateress 2: "I know. Yuk."
Hateress 1: "Come on, Becky, let's go snort some coke and throw up out lunch now."
Hateress 2: "K."