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1. Remove by passing through a filter
   "filter out the impurities"
   - filtrate, strain, separate out, filter out
    
2. Pass through
   - percolate, sink in, permeate
    
3. Run or flow slowly, as in drops or in an unsteady stream
   - trickle, dribble

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. [Brit] A traffic light used to allow some of the traffic to turn off while the rest remains stopped

Sounds like: philtre, philter

Derived forms: filtered, filtering, filters

See also: filtrate, filtration

Type of: course, device, electrical device, feed, flow, penetrate, perforate, run, separate

Encyclopedia: Filter