[treyf] 
| Judaism. unfit to be eaten or used, according to religious laws; not kosher. |
| tref (trāf) adj. Judaism Unclean and unfit for consumption according to dietary law; not kosher. [Yiddish treyf, from Hebrew ṭərēpâ, carrion, from ṭārap, to tear; see ṭrp in Semitic roots.] |
tref
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 and is thus prohibited as unfit for Jewish use. Terefah is thus the antithesis of kosher ("fit"). The broad connotation of terefah derives from a more specific prohibition against eating meat that has been "torn" by a wild animal (e.g., Exodus 22:31).
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