DICT.TW Dictionary Taiwan

 lees
      n : the sediment from fermentation of an alcoholic beverage

 Lees
    (Heb. shemarim), from a word meaning to keep or preserve. It was
    applied to "lees" from the custom of allowing wine to stand on
    the lees that it might thereby be better preserved (Isa. 25:6).
    "Men settled on their lees" (Zeph. 1:12) are men "hardened or
    crusted." The image is derived from the crust formed at the
    bottom of wines long left undisturbed (Jer. 48:11). The effect
    of wealthy undisturbed ease on the ungodly is hardening. They
    become stupidly secure (comp. Ps. 55:19; Amos 6:1). To drink the
    lees (Ps. 75:8) denotes severe suffering.