filter

remove by passing through a filter

• “filter out the impurities”

pass through

• “Water permeates sand easily”

run or flow slowly, as in drops or in an unsteady stream

• “water trickled onto the lawn from the broken hose”
• “reports began to dribble in”

device that removes something from whatever passes through it

an electrical device that alters the frequency spectrum of signals passing through it