piranha /pɪˈɹɑːn(j)ə/ noun2 •Any of certain freshwater fish of the subfamily Serrasalminae, native to South America; they are characterized by razor-sharp teeth and a reputation of being ferocious predators (despite most species being omnivorous).At a length of 36cm (14in), the red-bellied piranha was a giant of its kind – more than eight inches longer than an average specimen. — 2009 •(figurative) Someone, especially a critic, who appears to be part of a swarm and attacks someone when they are vulnerable, as if in a feeding frenzy. formspiranhas
