Source : Webster's Revised Unabridged Dictionary (1913)

Cask \Cask\, n. [Sp. casco potsherd, skull, helmet, prob. fr.
   cascar to break, fr. L. Quassure to break. Cf. {Casque},
   {Cass}.]
   1. Same as {Casque}. [Obs.]

   2. A barrel-shaped vessel made of staves headings, and hoops,
      usually fitted together so as to hold liquids. It may be
      larger or smaller than a barrel.

   3. The quantity contained in a cask.

   4. A casket; a small box for jewels. [Obs.] --Shak.

Cask \Cask\, v. t.
   To put into a cask.

Source : WordNet®

cask
     n 1: the quantity a cask will hold [syn: {caskful}]
     2: a cylindrical container that holds liquids [syn: {barrel}]