Definition of tuco-tuco in English:

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Pronunciation: /ˌto͞okō ˈto͞okō/

noun (plural tuco-tucos)

A burrowing ratlike rodent native to South America.
  • Family Ctenomyidae and genus Ctenomys: numerous species
Example sentences
  • The name ‘tuco-tuco’ comes from alarm calls in response to danger; other calls are also known in the more social species.
  • This long-term line of research focuses on tuco-tucos as a model for the study of diversification.
  • The one known exception is the social tuco-tuco, found in Argentina, which lives in colonies.


Mid 19th century: imitative of the call of some species.

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