scum, refuse

DREGS
WordClue
CRUDDirt, filth or refuse
LEESdregs, draff
ORTSdregs, trash
SCUMdregs, refuse
DRAFFdregs, loser
DROSSdregs, lees
LOSERdregs, settling
TRASHrefuse, waste
WASTErefuse, rubbish
GROUNDSdregs, rabble
OUTCASTdregs, residue
RESIDUEdregs, debris
RUBBISHrefuse, trash
SEAWEEDvarious types of algae
EXUVIATEdregs, rubbish
RIFFRAFFdregs, feculence
SEDIMENTdregs, deposit
SETTLINGdregs, scum
FECULENCEdregs, grounds
INCINERATORfurnace that burns refuse
ARTsculpture or dance
PORTHOLEscuttle