Hypertext Webster Gateway: "tref"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Tref \Tref\, a. [Yiddish, fr. Heb. t[e^]r[=e]ph[=a]h an animal
torn by wild beasts.]
Ceremonially unclean, according to the Jewish law; -- opposed
to {kosher}.
From WordNet (r) 1.7 (wn)
tref
adj : (Judaism) not conforming to dietary laws [syn: {nonkosher},
{terefah}]
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