Veil

a garment that covers the head and face

a membranous covering attached to the immature fruiting body of certain mushrooms

the inner membrane of embryos in higher vertebrates (especially when covering the head at birth)

a vestment worn by a priest at High Mass in the Roman Catholic Church

to obscure, or conceal with or as if with a veil

make undecipherable or imperceptible by obscuring or concealing