hmmm... I often found the word "fleur-de-lis" at hidden object games.. actually I know how the is it looks like.. but.. what is fleur-de-lis? 

The fleur-de-lis is a decorative royal symbol of France, Quebec and even part of Switzerland. Also, a variety of the fleur-de-lis is the symbol of Florence. AND it's the symbol of New Orleans. And speaking of the Big Easy, the fleur-de-lis is also the symbol which graces my favorite coffee cup, which Rachel made me a couple years ago.

Legend
The English translation of "fleur-de-lis" (sometimes spelled "fleur-de-lys") is "flower of the lily." This symbol, depicting a stylized lily or lotus flower, has many meanings. Traditionally, it has been used to represent French royalty, and in that sense it is said to signify perfection, light, and life. Legend has it that an angel presented Clovis, the Merovingian king of the Franks, with a golden lily as a symbol of his purification upon his conversion to Christianity. Others claim that Clovis adopted the symbol when waterlilies showed him how to safely cross a river and thus succeed in battle.

Heraldry
In the twelfth century, either King Louis VI or King Louis VII (sources disagree) became the first French monarch to use the fleur-de-lis on his shield. English kings later used the symbol on their coats of arms to emphasize their claims to the throne of France. In the 14th century, the fleur-de-lis was often incorporated into the family insignia that was sewn on the knight's surcoat, which was worn over their coat of mail, thus the term, "coat of arms." The original purpose of identification in battle developed into a system of social status designations after 1483 when King Edmund IV established the Heralds' College to supervise the granting of armor insignia

source: www.fleurdelis.com