The Collaborative International Dictionary of English v.0.48:

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.
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         A thousand demons lurk within the lee.   --Young.
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         The wine of life is drawn, and the mere lees
         Is left this vault to brag of.           --Shak.
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The Collaborative International Dictionary of English v.0.48:

Lees \Lees\ (l[=e]z), n. pl.
   Dregs. See 2d Lee.
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The Collaborative International Dictionary of English v.0.48:

Lees \Lees\ (l[=e]s), n.
   A leash. [Obs.] --Chaucer.
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WordNet (r) 3.0 (2006):

lees
    n 1: the sediment from fermentation of an alcoholic beverage