An unearthly rock formation in the shape of an erect penis complete with testicles in the Mahon Valley in the Comeragh Mountain range, pronounced man valley, which is an unfortunate enough coincidence. Legend has it that if you spit on Dicky Rock you will receive the gift of the shag!
A tight or miserly person who wouldn't want to part with there money.. can also refer to a quite and reserved person or in other slang terms, a 'dry' person