Lappet

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A lappet is a decorative flap, fold or hanging part of a headdress or garment. Worn in a pair, or as a singular long strip giving a symmetrical drape, lappets were a popular form of women's headwear until the early twentieth century, and are still a feature of religious garments. Examples of lappets are to be found on the papal tiara and on the nemes headdress of the kings of ancient Egypt. The same term is also used for similar-looking anatomical features on some animals.