. . . "Etrog (plural: etrogim, Hebrew: \u05D0\u05B6\u05EA\u05B0\u05E8\u05D5\u05B9\u05D2) is the yellow citron or Citrus medica used by Jewish people during the week-long holiday of Sukkot, as one of the four species. Together with a Lulav, Hadass and Aravah, the etrog is to be taken in each Jewish hand."@en .