Kashrut
Etymology

In Ancient Hebrew the word kosher (Hebrew: כשר) means be advantageous, proper, suitable, or succeed, according to the Brown–Driver–Briggs Hebrew and English Lexicon. In Modern Hebrew it generally refers to kashrut but it can also sometimes mean "proper". For example, the Babylonian Talmud uses kosher in the sense of "virtuous" when referring to Darius I as a "kosher king"; Darius, a Persian king (reigned 522–486 BCE), fostered the building of the Second Temple. In colloquial English, kosher often means "legitimate", "acceptable", "permissible", "genuine", or "authentic". The word kosher can also form part of some common product names.
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