run·nel /ˈrʌnḷ/
小河,細流
Run·nel n. A rivulet or small brook.
Bubbling runnels joined the sound. --Collins.
By the very sides of the way . . . there are slow runnels, in which one can see the minnows swimming. --Masson.
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runnel
n : a small stream [syn: rivulet, rill, run, streamlet]