rill /ril/

1. A very small brook
2. A runnel
3. A small trench
4. A narrow furrow on the moon or Mars (also rille from Ger Rille)
5. A fricative produced by forcing air out of a small gap formed between the tongue and the roof of the mouth (phonetics)

To flow in a rill or rills

rilled adjective

rillˈet noun

A little rill

rillˈmark noun (geology)

A marking produced by water trickling down a beach or bank

• babble
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