The word "prepuce" refers to the fold of skin that covers the tip of the penis in males or the clitoral hood in females. It is a protective covering. Full definition
[7] In the aftermath of the conquests of Alexander the Great, however, Greek dislike of circu - mcision (they regarded a man as truly «naked» only if his prepuce was retracted) led to a decline in its incidence among many peoples that had previously practiced it. (religion.blogs.cnn.com)