roach (n.)
- acid
- afterglow
- afterimage
- antidepressant
- ataractic
- balance
- butt
- chaff
- chigoe
- cockroach
- crab
- debris
- detritus
- end
- flea
- fossil
- gage
- ganja
- grass
- grayback
- hallucinogen
- hash
- hashish
- hay
- hemp
- holdover
- jigger
- joint
- kava
- leftovers
- louse
- marijuana
- mescal
- mescaline
- mite
- nit
- orts
- parasite
- peyote
- pot
- psilocin
- psilocybin
- reefer
- refuse
- remainder
- remains
- remnant
- residue
- residuum
- rest
- rubbish
- rump
- sawdust
- scraps
- shadow
- shavings
- stick
- straw
- stubble
- stump
- survival
- tea
- trace
- tranquilizer
- vermin
- vestige
- waste
- weed
- weevil