The meaning of Knuckle in dream | Dream interpretation
Whether the knuckles featured in your dream were your own or someone else’s, they indicate that you are wasting time and energy on an exercise in futility; reassess your goals.
Dreams of a knuckle symbolize that you are clutching or holding tightly to a person, ideal, or point of view. Perhaps you are grasping at something or someone to hold onto. See Fist.
Should you dream you knock with your Knuckles, unrequited affections.