kosher

Etymology

From Yiddish כּשר (kosher), from Hebrew כָּשֵׁר (kashér).

adj

1. (Judaism) Fit for use or consumption, in accordance with Jewish law (especially relating to food).
   Only in New York can you find a good, kosher hamburger!
   David's mother kept a kosher kitchen, with separate sets of dishes for meat and for dairy.
   In order for a suit to be kosher, it cannot contain both wool and linen together.
2. (figurative, by extension) In accordance with standards or usual practice.
   Is what I have done kosher with Mr. Smith?

adv

1. In a kosher manner; in accordance with kashrut.
   Just like eating halal is not a choice for our Muslim brothers and sisters, for us, eating kosher is not voluntary; it’s who we are and as necessary as the oxygen we need for sustenance. August 20, 2020, Eliezer Brand, “ICE is forcing Muslims to eat pork. My fellow Orthodox Jews: This is our fight!”, in The Forward

verb

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