Terefah (טרפה, lit. `Torn` by beast of prey) refers to any animal whose death is due to mortal injuries or physical defects. The prohibition of eating terefah stems from the biblical verse, וְאַנְשֵׁי קֹדֶשׁ תִּהְיוּן לִי וּבָשָׂר בַּשָּׂדֶה טְרֵפָה לֹא תֹאכֵלוּ לַכֶּלֶב..... Found on http://en.wikipedia.org/wiki/Terefah
any food, food product, or utensil that, according to the Jewish dietary laws (kashruth, q.v.), is not ritually clean or prepared according to law ... [2 related articles] Found on http://www.britannica.com/eb/a-z/t/26