1) Barrel bottom stuff 2) Barrel scrapings 3) Basest portion 4) Bottom bits 5) Bottom of the barrel 6) Bottoms of wine barrels 7) Cabernet sediments 8) Coffee grounds 9) Coffeepot residues 10) Decanter residue 11) Deposit 12) Grounds 13) Hardly the choice parts 14) Hardly the creme de la creme 15) Heeltaps 1) Bottom of the barr 2) Dross 3) Lees 4) Remains 5) Residue 6) Sediment 7) Sediments 8) Settlings 9) Tero 
Dregs is British slang for a despicable person.
[n] - sediment that has settled at the bottom of a liquid
grounds noun sediment that has settled at the bottom of a liquid
sediment that has settled at the bottom of a liquid[Intelligent words] sediment that has settled at the bottom of a liquid