A girl from the hills, country, or woods who is of questionable reputation. She will have had sex with every man and boy in her small redneck community. It is derived from hoodrat but since she has never been to the hood or even a city she is a woodrat.
Bubba: "Man I'm gonna geter done with Darlene tonight"
Jetrho: "Damn me to, she's such a woodrat I fucked her well her dad watched las week"