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Definition of acre river
acre river
acre river Lexical Profile
CEFR
C1
Grade
10
Tier
3
Usage
Rare
• noun
1
A 680-kilometer-long river in central South America that originates in Peru, forms parts of the international borders between Peru, Brazil, and Bolivia, and eventually flows northeastward into the Purus River in Brazil.
Example
"During the rubber boom, the Acre River served as a vital transportation route for communities deep within the Amazon Basin."
• Nearby Words
Word Origin & Etymology
Named after the Acre region of South America. The name 'Acre' is likely derived from the indigenous Apurinã word 'a'kirü' (green river) or from a localized term for a specific headdress.
Cite this Entry
Wordmom. (2026). Definition of Acre river. In Wordmom Dictionary. Retrieved Oct 12, 2026, from https://wordmom.com/dictionary/acre river