Definitions:

1. a person who establishes fraudulant personal profiles on social networks in order to deceive others noun
   • Did you hear about the catfish who stole half a million dollars from someone on a dating website?
2. any of numerous mostly freshwater bottom-living fishes of Eurasia and North America with barbels like whiskers around the mouth noun
   • We caught some catfish last time we went fishing, and they sure tasted good!
3. to defraud or deceive someone by establishing a fraudulent personal profile on a social network verb
   • Someone catfished me last year, but I stopped talking to them when they asked for money.