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rill - 6 dictionary results

rill

1  [ril]
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–noun
a small rivulet or brook.
Origin:
1530–40; < D or LG; cf. Fris ril

rill

2  [ril]
–noun Astronomy.
any of certain long, narrow, straight or sinuous trenches or valleys observed on the surface of the moon.
Also, rille.

Origin:
1885–90; < G Rille; see rill 1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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rill also rille   (rĭl)   
n.  
  1. A small brook; a rivulet.
  2. A long narrow straight valley on the moon's surface.

[Low German rille or Dutch ril, running stream; see rei- in Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Rill

Rill\ (r[i^]l), n. [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. [root]11.]

1. A very small brook; a streamlet.

2. (Astron.) See Rille.

Rill

Rill\, v. i. To run a small stream. [R.] --Prior.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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rill 
"small brook, rivulet," 1538, from Du. ril, Low Ger. rille "groove, furrow," probably from P.Gmc. *riðele (cf. O.E. rið, riþe "brook, stream," which survives only in obscure Eng. dialects), a diminutive form from PIE base *reie- "to run, flow" (see Rhine).
Online Etymology Dictionary, © 2001 Douglas Harper
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