It's an implement used the protect the glans of the penis during circumcision.
Jewish Shield
The Star of David, or the Shield of David, is a Jewish civic symbol representing the Jewish Nation.
The David in the Star or Shield of David is King David from the Tanach (Jewish Bible).
The Shield of David is a Jewish symbol that first started appearing in the middle ages. Although it is attributed to King David, there is no evidence that it existed in Biblical times.
It is the Star (Shield) of David; the major symbol of Jewish identity and Judaism.
Although it is often called 'the Star of David', the actual name for this symbol is the 'Shield of David'. The Shield of David is a secular (non-religious) symbol for the Jewish Nation.
It is known in English as "The Jewish Star" or "the Star of David". In Hebrew is is called the Shield of David or Magen Dahveed (מגן דוד). It is the symbol of the Jewish nation all over the world. Legend says it was the shape of the shield that King David used, but this is only a story.
It is King David's Star of David. The Star of David represents the unity of the Jewish people since the Jewish people were all united in the days of King David. In this era where Jews are scattered all over the world, this power of this unifying symbol is still stronger.
The Shield of David is the literal translation for the Magen David. The Magen David was the emblem on King David's shield and therefore became representative of the united Jewish community. Today, that symbol is called the "Star of David" in English since it looks like a six-pointed star.
The Shield of David was not discovered. It was invented in the Middle Ages as a symbol for Jewish nationality. It is not actually an ancient symbol.
The Shield of David (or Magen David) does not help the Jews. It is just a symbol of Jewish nationality and identity.
There are a number of symbols that the Israelites used over the years, from the Mount of Olives to the Twelve Stones to a Dove to the Shield of David. The Modern Jewish Religious Symbol is the Shield of David, commonly (and incorrectly) called the "Star of David."