Vail, v. t. [Aphetic form of avale. See Avale, Vale.] [Written also vale, and veil.] 1. To let fall; to allow or cause to sink.
Vail your regard
Upon a wronged, I would fain have said, a maid! Shak.
2. To lower, or take off, in token of inferiority, reverence, submission, or the like.
France must vail her lofty-plumed crest! Shak.
Without vailing his bonnet or testifying any reverence for the alleged sanctity of the relic. Sir. W. Scott.