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; a silk shawl

to obscure, or conceal with or as if with a veil; "women in Afghanistan veil their faces"

make undecipherable or imperceptible by obscuring or concealing; "a hidden message"; "a veiled threat"