Kosher

Webster's Dictionary of the English Language

·add. ·noun Kosher food; also, a kosher shop.

II. Kosher ·add. ·vt To prepare in conformity with the requirements of the Jewish law, as meat.

III. Kosher ·add. ·adj Ceremonially clean, according to Jewish law;

— applied to food, ·esp. to meat of animals slaughtered according to the requirements of Jewish law. Opposed to tref. Hence, designating a shop, store, house, ·etc., where such food is sold or used.