Though it means "lily", the fleur-de-lis is a variety of this flower
Moreover, 
supposing that it was already called a fleur-de-lys at the time, the lily flower had 
.... arms of three fleur-de-lis as sign of the blessed Trinity, sent by God through 
His... [DOC] [TLE] The Fleur-de-Lis [PAR] This symbol, depicting a stylized lily or lotus flower, has many meanings.