Read the dictionary definition of filter. All definitions for this word.
1. device that removes something from whatever passes through it
2. an electrical device that alters the frequency spectrum of signals passing through it
3. pass through
1. Water permeates sand easily
4. remove by passing through a filter
1. filter out the impurities
5. run or flow slowly, as in drops or in an unsteady stream
1. water trickled onto the lawn from the broken hose
2. reports began to dribble in
