Source : Webster's Revised Unabridged Dictionary (1913)

Lee \Lee\, n.; pl. {Lees} (l[=e]z). [F. lie, perh. fr. L. levare
   to lift up, raise. Cf. {Lever}.]
   That which settles at the bottom, as of a cask of liquor
   (esp. wine); sediment; dregs; -- used now only in the plural.
   [Lees occurs also as a form of the singular.] ``The lees of
   wine.'' --Holland.

         A thousand demons lurk within the lee.   --Young.

         The wine of life is drawn, and the mere lees Is left
         this vault to brag of.                   --Shak.

Lees \Lees\ (l[=e]s), n.
   A leash. [Obs.] --Chaucer.

Lees \Lees\ (l[=e]z), n. pl.
   Dregs. See 2d {Lee}.

Source : WordNet®

lees
     n : the sediment from fermentation of an alcoholic beverage