1knuck·le 
/ˈnʌkəl/ noun
plural knuck·les /ˈnʌkəl/ noun [count] 1 : any one of the thick, bony parts (called joints) in your fingers
▪ She rapped her knuckles on the table. — see picture at hand 2 : a piece of meat that includes a joint from the leg of an animal
▪ a pork knuckle
▪ She rapped her knuckles on the table. — see picture at hand
▪ a pork knuckle
a rap on/over/across the knuckles — see 1rap
rap (someone) on/over/across the knuckles — see 2rap
