bolter
clarifier
colander
cradle
cribble
filter
grate
grating
lixiviator
percolator
purifier
refiner
refinery
riddle
rocker
screen
sieve
sorter
strainer
winnow
winnowing basket
winnowing fan
winnowing machine
ballistae
benchtop
biopolymer
coalheaver
drainpipe
heaver
medimni
onit
separators