burn
n. countable B2 Upper Intermediate Oxford US //ˈbɝn// UK //bˈɜːn// burn
n. a clever or funny insult that makes someone look silly. You use this when someone says something that perfectly shuts down another person.
n. a clever, often insulting remark intended to humiliate or defeat an opponent in a verbal exchange. Informal in register; frequently used in competitive or social contexts.
That was a sick burn.
After he made a joke about her old car, her quick comeback was such a burn that the whole room went quiet.
While the debate was mostly professional, the candidate ended his closing statement with a subtle burn that highlighted his opponent's lack of experience.