catflap.org Online Dictionary Query

  channel scour /tʃˈanəl skˈaʊə/
  Flusssohlenerosion , Sohlenerosion 
     Synonyms: streambed erosion, bed erosion
  
   see: erosion, truncation, denudation, backward erosion, headward erosion, headcut erosion, retrograde erosion, retrogressive erosion, knickpoint retreat, potential erosion, interrupted erosion, surface erosion, sheet erosion, sheet wash, vertical erosion, downcutting, degradation, soil erosion, land erosion, river erosion, stream erosion, fluvial erosion, fluviatile erosion, lateral erosion, glacial erosion, exaration, streambank erosion, bank erosion, washing of a bank, rill erosion, rill wash, gully erosion, gullying, water erosion, wash, wind erosion, blowing erosion, aeolian erosion, eolation, deflation