Revision as of 21:16, 3 October 2005 by WikiConvertor
1. A very small brook; a streamlet.
2. (Science: astronomy) See rille.
Origin: Cf. LG. Rille a small channel or brook, a furrow, a chamfer, OE. Rigol a small brook, F. Rigole a trench or furrow for water, W. Rhill a row, rhigol a little ditch.
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