Math and Arithmetic
What does browbeat mean?
To point out someones presumed faults in a derogatory way, to wrongly chastise someone or correct them for no real wrong doing
Idioms, Cliches, and Slang
What is the origin of the idiom browbeat?
It is fairly self-explanatory. The brow here refers to raised eyebrows. So someone may give you an intimidating look to try to bully you into doing something.