Cách sử dụng
The word 'knuckle' is used to refer to the joints in our fingers where they bend. We use our knuckles to hit or knock on a door or a table. We also use the expression 'bare your knuckles' to show that you are ready to fight. Sometimes, people say 'knuckle down' to mean they are getting serious and starting to work hard on something. Overall, knuckle is a word commonly used to describe the joints in fingers or as an idiom to show physical strength, endurance, and determination.