Numb

Numb: Lacking sensation or feeling; insensitive-- Is it possible to feel numb? After all, is numbness not a lack of feeling? If numbness is truly a lack of thereof, is it truly numb? It is a feeling, after all. The feeling of not having a feeling is a feeling because you feel as though you feel nothing. Yet, is it not so that you still FEEL something? In the end, does it still not return to the state or quality of being numb a feeling? Therefore, how is it so that numbness and being numb can be defined as "lacking sensation; or feeling"?