waste, waste material, waste matter, waste product - any materials unused and rejected as worthless or unwanted; "they collect the waste once a week"; "much of the waste material is carried off in the sewers"

scrap metal - discarded metal suitable for reprocessing; "he finally sold the car for scrap metal"

debris, detritus, junk, rubble, dust - the remains of something that has been destroyed or broken up

litter - rubbish carelessly dropped or left about (especially in public places)

ragtag, ragtag and bobtail, riffraff, rabble - disparaging terms for the common people

drivel, garbage - a worthless message

jargon, lingo, patois, argot, vernacular, slang, cant - a characteristic language of a particular group (as among thieves); "they don't speak our lingo"

amphetamine, pep pill, upper, speed - a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression

controlled substance - a drug or chemical substance whose possession and use are controlled by law

chuck out, discard, cast aside, cast away, throw away, toss away, toss out, put away, throw out, cast out, dispose, fling, toss - throw or cast away; "Put away your worries"

disparage, belittle, pick at - express a negative opinion of; "She disparaged her student's efforts"