filter

[1]	filter out , strain , screen , sift , winnow , clarify , refine , purify , clean , separate , weed out , exclude , eliminate
[2]	leach , filtrate , strain , percolate , drip , separate out , filter out , seep , dribble , trickle , drain , run/pass through , ooze
[3]	percolate , sink in , permeate
[4]	trickle , dribble

[1]	sieve , colander , riddle , screen , strainer , gauze , cloth , cheesecloth , membrane