"filtering" in the verb sense
1. filter, filtrate, strain, separate out, filter out
remove by passing through a filter
"filter out the impurities"
2. percolate, sink in, permeate, filter
pass through
"Water permeates sand easily"
3. trickle, dribble, filter
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"
Source: WordNet® (An amazing lexical database of English)
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