Feinstein, Finestein (Yiddish:פֿײַנשטײַן, Hebrew:פינשטיין, פיינשטיין, Russian:Файнштейн), a surname, may be: "Feinsteine"'s one of aggregate names of grain size. See German article. Feinstein's a Jewish name. People: Alan Feinstein (b. 1932), American philanthropist Andrew Fein… (More on Feinstein)