catflap.org Online Dictionary Query

  knickpoint retreat /nˈɪkpɔɪnt ɹɪtɹˈiːt/
  rückschreitende Erosion, Rückwärtserosion 
     Synonyms: backward erosion, headward erosion, headcut erosion, retrograde erosion, retrogressive erosion
  
   see: erosion, truncation, denudation, 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, streambed erosion, bed erosion, channel scour, 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