What is the meaning of Kosher?

Fit for use or consumption, in accordance with Jewish law (especially relating to food).

Observant of the rules of kashrut (of a person or establishment).

In accordance with standards or usual practice.

In a kosher manner; in accordance with kashrut.

To kasher; to prepare (for example, meat) in conformity with the requirements of the Jewish law.

kosher (prepared in accordance with Jewish religious practices)

kosher

alternative spelling of koscher

Source: wiktionary.org