the matter that settles to the bottom of a liquid; lees; dregs.

Geology . mineral or organic matter deposited by water, air, or ice.

to deposit as sediment.

to form or deposit sediment.

noun

whole

noun

debris , deposit , dregs , dross , gook , grounds , gunk , lees , matter , powder , precipitate , precipitation , residuum , settling , silt , slag , solids , trash , waste , dreg , alluvium , crap , feculence , hypostasis , recrement , refuse , remains , residue , scoria , scum , sedimentation , settlings , sludge , soot