Borscht Belt

region in the Catskill Mountains with many summer resorts frequented by Jews, especially in the mid twentieth century

Chrismukkah

"Chrismukkah is a pop-culture portmanteau neologism referring to the merging of the holidays of Christianity's Christmas and Judaism's Hanukkah." (Wikipedia)

goyish

"in the manner or style of a non-Jewish person" (JPS), especially something WASPy or "white bread"

heeb

slang term used to describe a Jewish person

JBA

Jew by Association

Jew crew

group of Jews who hang out together

Jewdar

ability to detect individuals' Jewishness (on analogy with "gaydar" and ultimately "radar")

Jewfro

a large, frizzy hairstyle, sported by Jewish men (on analogy with "afro")

Jewishness

The quality of being a Jew, not limited to (nor necessarily excluding) religion, ethnicity, biology, or nationality.

Ethnic or cultural Jewish identity, as distinct from "Judaism"

Jewy

Highly identified Jewishly, either outwardly in terms of actions and affiliations, or inwardly based on self-definition.

Demonstating stereotypical or conspicuous appearance or behaviors that identify one as a Jew.