1) Non-kosher food 
Treif (טרײף) — also trayf, treyf, or tref — is the Yiddish word for food that does not conform with the Jewish dietary laws of kashrut. The word is derived from the Hebrew טְרֵפָה (trēfáh) meaning `torn,` and designated foods that are either inherently forbidden or rendered unacceptable due to an incorrect preparation. Originall.....