Definition of pororoca in English:

pororoca

(also pororóca)

Pronunciation /ˌpɒrəˈrəʊkə/

noun

  • In Brazil: a large tidal bore in the Amazon basin.

Origin

Mid 19th century; earliest use found in Philosophical Transactions of the Royal Society of London. From Portuguese pororoca, †pororóca from Tupi pororóka, literally ‘roar’.