piranha
UK[pɪˈrɑːnə]US[pɪˈrænə]
n
a small, aggressive south american freshwater fish with sharp teeth that hunts in groups.
Etymology
the word 'piranha' entered english via portuguese, which borrowed it from the indigenous tupi language of brazil. in tupi, the term is a compound, believed to be formed from 'pirá' meaning "fish" and 'sainha' or 'ãia' meaning "tooth" or "bad," thus literally describing a "tooth fish" or a fish with sharp, cutting teeth. this vivid name was adopted directly by european explorers and naturalists to label the formidable predator. its spelling was anglicized over time, but the word remains a direct linguistic import reflecting the fauna and vocabulary of the amazon basin.
Analysis
this word is a loanword from the tupi-guarani languages of south america. it is not meaningfully segmentable into smaller morphemes using english or classical language roots.
Examples
a school of piranha can strip the flesh from a large animal in minutes.
despite their fearsome reputation, some piranha species are primarily scavengers or seed-eaters.
the documentary highlighted the vital role piranha play in their river ecosystem.