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Definition of main river

main river

Plural:main rivers
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• noun

1

The primary or trunk channel of a river system into which smaller tributary streams flow before reaching an ocean, sea, or lake.

Example

"Heavy spring snowmelt in the surrounding mountains caused several smaller creeks to overflow before draining into the main river."

2

(capitalized as Main River) A major river in south-central Germany and the longest right-bank tributary of the Rhine, flowing westward for about 525 kilometers through Bavaria and Hesse—passing the financial hub of Frankfurt am Main—and serving as a vital link in the Rhine-Main-Danube inland waterway.

Synonyms
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Antonyms
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Word Nuance & Usage

When capitalized as the proper noun "Main River," it refers to the major German waterway, in which "Main" is pronounced to rhyme with "mine" rather than the English adjective "main."

• Nearby Words

mailvan
maim
main
main river
mainboard
mainer
mainframe

Cite this Entry

Wordmom. (2026). Definition of Main river. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/main-river
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