KNUCKLE
Meaning of KNUCKLE in English
n.
1) to rap smb. on, over the ~s
2) to crack one's ~s
3) brass ~s ( AE ; BE has ~ duster )
The Bbi combinatory dictionary of English, a guide to word combinations.
Комбинаторный словарь английского языка Bbi. Руководство по словосочетаниям.
2012