1) Impure 2) Impure, from the Yiddish 3) Like bacon, for some 4) Like pork and shellfish 5) Like shellfish 6) Nonkosher 7) Not allowed on certain diets 8) Not kosher 9) Terefah 10) Unclean 11) Unclean, by jewish law 12) Unclean, like non-kosher food 13) Unkosher 14) Welsh boy name 1) Nonkosher 2) Terefah 3) Unclean 
[English words of Yiddish origin] (or trayf or traif) not kosher (Yiddish treyf, from Hebrew ṭərēfā 'carrion')
• (a.) Ceremonially unclean, according to the Jewish law; -- opposed to kosher.
Transportable Reconnaissance Exploitation Facility