/koh"sheuhr/ , adj.
1. Judaism.
a. fit or allowed to be eaten or used, according to the dietary or ceremonial laws: kosher meat; kosher dishes; a kosher tallith.
b. adhering to the laws governing such fitness: a kosher restaurant.
2. Informal.
a. proper; legitimate.
b. genuine; authentic.
3. keep kosher , to adhere to the dietary laws of Judaism.
n.
4. Informal. kosher food: Let's eat kosher tonight.
v.t.
5. Judaism. to make kosher: to kosher meat by salting.
Also, kasher .
[ 1850-55; 1920-25 for def. 2; kasher right, fit ]