schmuck (n.) also shmuck, "contemptible person," 1892, from East Yiddish shmok, literally "penis," probably from Old Polish smok "grass snake, dragon," and likely not the same word as German Schmuck "jewelry, adornments," which is related to Low German smuck "supple, tidy, trim, elegant," and to Old Norse smjuga "slip, step through" (see smock).. In Jewish homes, the word was "regarded as so ...