A Jewish priest is called a "Kohen." Those who gain this title are considered to be descendants of Aaron the priest. Kohens are not to be confused with rabbis, who are simply religious educators in the Jewish religion.
Certain rules in Judaism apply to Kohens, including that they may not marry a divorced person. Kohens are also given the high honor of being the first person called to read the Torah. They are also given the right to say a blessing when they are present at the table if they wish to, and they are asked to recite the priestly blessings in the synagogue.