Definitions of rill
  1. noun
    a small stream
    synonyms: rivulet, run, runnel, streamlet
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    type of:
    stream, watercourse
    a natural body of running water flowing on or under the earth
  2. noun
    a small channel (as one formed by soil erosion)
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    type of:
    a deep and relatively narrow body of water (as in a river or a harbor or a strait linking two larger bodies) that allows the best passage for vessels
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