Definition from macmillandictionary.com
The car broke down just outside Winchester.
The amount doesn’t seem quite so bad when you break it down into monthly payments.
The substance is easily broken down by bacteria.
At one point, the talks broke down completely.
People broke down and wept when they heard the news.
Firefighters had to break down the door to get into the flat.
The aim of the agreement is to break down barriers to trade.