From The Collaborative International Dictionary of English v.0.48:
Vail \Vail\, n. [Aphetic form of avail, n.] [1913 Webster] 1. Avails; profit; return; proceeds. [Obs.] [1913 Webster]
My house is as 'twere the cave where the young outlaw hoards the stolen vails of his occupation. --Chapman. [1913 Webster]
2. An unexpected gain or acquisition; a casual advantage or benefit; a windfall. [Obs.] [1913 Webster]
3. Money given to servants by visitors; a gratuity; -- usually in the plural. [Written also vale.] --Dryden. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Vail \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. [Obs.] [1913 Webster]
Vail your regard Upon a wronged, I would fain have said, a maid! --Shak. [1913 Webster]
2. To lower, or take off, in token of inferiority, reverence, submission, or the like. [1913 Webster]
France must vail her lofty-plumed crest! --Shak. [1913 Webster]
Without vailing his bonnet or testifying any reverence for the alleged sanctity of the relic. --Sir. W. Scott. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Vail \Vail\ (v[=a]l), v. i. To yield or recede; to give place; to show respect by yielding, uncovering, or the like. [Written also vale, and veil.] [Obs.] [1913 Webster]
Thy convenience must vail to thy neighbor's necessity. --South. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Vale \Vale\ (v[=a]l), n. [OE. val, F. val, L. vallis; perhaps akin to Gr. 'e`los low ground, marsh meadow. Cf. Avalanche, Vail to lower, Valley.] A tract of low ground, or of land between hills; a valley. " Make me a cottage in the vale." --Tennyson. [1913 Webster]
Beyond this vale of tears there is a life above. --Montgomery. [1913 Webster]
In those fair vales, by nature formed to please. --Harte. [1913 Webster]
Note: Vale is more commonly used in poetry, and valley in prose and common discourse. [1913 Webster]
Syn: Valley; dingle; dell; dale. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Vale \Vale\, n. See 2d Vail, 3. [1913 Webster]