noun, feminine/kut͡ʃuˈfleta/plural: cuchufletas
cuchufleta is feminine in Spanish.
jibe
“el cura y Amarillo dejaron caer alguna punzante cuchufleta sobre la persona del filósofo de aldea” — the priest and Amarillo let out a piercing jibe to the person of the village philosopher
Synonyms: broma, chanza
Seemingly from cuchillo (“knife”), likely due to the insult being piercing as a knife is.