미꾸라지

Etymology
First attested in the Gukhan hoehwa (國韓會話 / 국한회화), 1895, as, equivalent to ; see for more.

now means "pond loach" only, but in Middle and Early Modern Korean referred to both pond loaches and.

Noun

 * 1) The, , a common fish in Korean lakes and rivers
 * 2)  a cunning, slippery person