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Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This

rill1

Audio Help [ril] Pronunciation Key

–noun

a small rivulet or brook.

[Origin: 1530–40; < D or LG; cf. Fris ril

]

Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.

Encyclopædia Britannica, Inc.
rill

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rill2

Audio Help [ril] Pronunciation Key

–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 rill¹

]

Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.

American Heritage Dictionary - Cite This Source - Share This

rill also rille Audio Help (rĭl) Pronunciation Key
n.

A small brook; a rivulet.
A long narrow straight valley on the moon's surface.

[Low German rille or Dutch ril, running stream; see rei- in Indo-European roots.]

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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.

Online Etymology Dictionary - Cite This Source - Share This
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).

WordNet - Cite This Source - Share This

rill
noun
1.	a small stream [syn: rivulet]
2.	a small channel (as one formed by soil erosion)

Webster's Revised Unabridged Dictionary - Cite This Source - Share This

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.

Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Rill

Rill\, v. i. To run a small stream. [R.] --Prior.

Acronym Finder - Cite This Source - Share This

RILL

RILL: in Acronym Finder

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