someone who emulates good ole albus dumbledore from harry
potter. This can be done in numerous ways:
1) being very hairy. this does not just have to be in the beard department. it can be eyebrows, nostrils, ears or err..anywhere else.
2) specs
3) a quivvering voice - very
popular amongst the aging.
4) gowns/robes
5) tendancy to get their wand out and flash it around a bit too much
6) walking with a hunch/eccentric stride
7) generally acting
like someone who believes they own a whole magical realm
yet having the assetts of an old man.
these are only a few ways to identify a dumble.
dumble-
pube can also be used to describe anything wispy and grey that looks unlikely to be a dumble-beard.