Cách sử dụng
A millstone is a big heavy flat stone that is used to grind grain to make flour. It is usually made of granite or other hard rock. This word is often used to describe a heavy burden or responsibility that someone has to bear. For example, if someone has a job that puts a lot of pressure on them, they might say that it feels like they have a millstone around their neck. So, while millstones are used for grinding, the word can also be used figuratively to describe something that feels heavy or burdensome.