a rap on/over/across the knuckles

:  a sharp blow or knock

:  a sharp rebuke or criticism

:  the responsibility for or adverse consequences of an action

:  to strike with a sharp blow

:  to utter suddenly and forcibly

:  to cause to be or come by raps

:  to snatch away or upward

:  enrapture

:  a minimum amount or degree (as of care or consideration) :  the least bit

:  to talk freely and frankly

:  to perform rap music

:  talk, conversation

:  a line of talk :  patter

:  a rhythmic chanting often in unison of usually rhymed couplets to a musical accompaniment

:  across a barrier or intervening (see intervene 4) space

:  across the goal line in football

:  forward beyond an edge or brink and often down

: used as a function word to indicate motion or situation in a position higher than or above another

: used as a function word to indicate the possession of authority, power, or jurisdiction in regard to some thing or person

: used as a function word to indicate superiority, advantage, or preference

:  upper, higher

:  outer, covering

:  excessive

:  to leap over

:  from one side to the opposite side of :  over, through

:  on the opposite side of

:  so as to intersect or pass through at an angle

:  in a position reaching from one side to the other :  crosswise

:  to or on the opposite side

:  so as to be understandable, acceptable, or successful

:  being in a crossed position

:  the joint of a knuckle

:  a cut of meat consisting of the tarsal or carpal joint with the adjoining flesh

:  something resembling a knuckle: such as

:  to place the knuckles on the ground in shooting a marble

:  to press or rub with the knuckles