|Language:||Middle Low German|
|Origin:||knökel 'small bone, knuckle'|
your knuckles are the joints in your fingers, including the ones where your fingers join your hands:
Her knuckles whitened as she gripped the gun.
a piece of meat around the lowest leg joint of a pig:
a knuckle of pork
3 British English informal
rude, or likely to give offence:
Some of his jokes are a bit near the knuckle.