n. 25B6; plural noun
the dregs from a bottle of wine : SEDIMENT, deposit, residue, accumulation, sludge, lees, grounds, settlings; remains; technical residuum; archaic grouts.
the dregs of humanity : SCUM, refuse, riff-raff, outcasts, deadbeats; the underclass, the untouchables, the lowest of the low, the great unwashed, the hoi polloi; informal trash; Brit. informal dossers.