The Collaborative International Dictionary of English v.0.48:
Veil \Veil\ (v[=a]l), n. [OE. veile, OF. veile, F. voile, L.
velum a sail, covering, curtain, veil, probably fr. vehere to
bear, carry, and thus originally, that which bears the ship
on. See Vehicle, and cf. Reveal.] [Written also vail.]
1. Something hung up, or spread out, to intercept the view,
and hide an object; a cover; a curtain; esp., a screen,
usually of gauze, crape, or similar diaphnous material, to
hide or protect the face.
The veil of the temple was rent in twain. --Matt.
She, as a veil down to the slender waist,
Her unadorn['e]d golden tresses wore. --Milton.
2. A cover; a disguise; a mask; a pretense.
[I will] pluck the borrowed veil of modesty from the
so seeming Mistress Page. --Shak.
(a) The calyptra of mosses.
(b) A membrane connecting the margin of the pileus of a
mushroom with the stalk; -- called also velum.
4. (Eccl.) A covering for a person or thing; as, a nun's
veil; a paten veil; an altar veil.
5. (Zool.) Same as Velum, 3.
To take the veil (Eccl.), to receive or be covered with, a
veil, as a nun, in token of retirement from the world; to
become a nun.