Filter - Definition

n 1: device that removes something from whatever passes through
it
2: an electrical device that alters the frequency spectrum of
signals passing through it
v 1: remove by passing through a filter; "filter out the
impurities" [syn: filter, filtrate, strain, separate
out, filter out]
2: pass through; "Water permeates sand easily" [syn:
percolate, sink in, permeate, filter]
3: 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" [syn: trickle, dribble, filter]