\ ˈril How to pronounce rill (audio) \

Definition of rill

 (Entry 1 of 3)

: a very small brook


rilled; rilling; rills

Definition of rill (Entry 2 of 3)

intransitive verb

: to flow like a rill
\ ˈril How to pronounce rill (audio) \
variants: or rille \ ˈril How to pronounce rille (audio) , ˈri-​lə \

Definition of rill (Entry 3 of 3)

: any of several long narrow valleys on the moon's surface

First Known Use of rill

Noun (1)

1538, in the meaning defined above


1610, in the meaning defined above

Noun (2)

1868, in the meaning defined above

History and Etymology for rill

Noun (1)

Dutch ril or Low German rille; akin to Old English rīth rivulet

Noun (2)

German Rille, literally, channel made by a small stream, from Low German, rill

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Cite this Entry

“Rill.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rill. Accessed 10 Jul. 2020.

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More Definitions for rill


\ ˈril How to pronounce rill (audio) \

Kids Definition of rill

: a very small stream

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More from Merriam-Webster on rill

Thesaurus: All synonyms and antonyms for rill

Rhyming Dictionary: Words that rhyme with rill

Spanish Central: Translation of rill

Nglish: Translation of rill for Spanish Speakers

Britannica.com: Encyclopedia article about rill

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