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 (compare Ps. 55:19; Amos 6:1). To drink the
lees (Ps. 75:8) denotes severe suffering.