The Vietnamese word "ruồi trâu" translates to "gadfly" in English. It refers to a type of fly that is known for bothering livestock, especially cows and horses. However, in a broader sense, "ruồi trâu" can also refer to someone who annoys or provokes others, often by nagging or pestering them.
While "ruồi trâu" primarily refers to the gadfly, it can also be used in a more figurative sense to indicate any persistent nuisance in life.
"Ruồi trâu" is a versatile word that can describe both a type of insect and a person who is bothersome.