KNUCKLE - body idioms

What is a knuckle?

A knuckle is located on the hand. It’s the joint at the base of each finger.
The plural is ‘knuckles’.

FUN FACT – The ‘k’ inthe word knuckle is silent. Just to confuse you all even more… we have many silent letters in English.

Let’s look at some popular body idioms that contain the word ‘knuckle’. It’s time to knuckle down and learn some idioms.

I’ve added the meaning and a picture example too.