Final answer:
A veil is a piece of fine material worn by women to protect or hide the face, often for cultural or religious reasons. It can also be used as a metaphor to represent different worlds in literature.
Step-by-step explanation:
A veil, in English, is defined as a piece of fine material worn by women to protect or hide the face. It is often worn for cultural or religious reasons. For example, some Muslim women choose to wear veils as a symbol of their cultural identity or religious piety. Veils can also be used as a symbol in literature, such as Du Boise's concept of the 'veil' representing the different worlds that Black and White people must inhabit.