Synonyms for Filter (same or very similar meaning)
WordNet sense 1 (run or flow slowly, as in drops or in an unsteady stream):
dribble, trickleWordNet sense 2 (remove by passing through a filter):
filtrate, strain, filter out, separate outWordNet sense 3 (pass through):
percolate, permeate, sink inFrom the ODE community, based on WordNetadd/edit