WordNet (r) 3.0 (2006):

potato nose
    n 1: enlargement of the nose with dilation of follicles and
         redness and prominent vascularity of the skin; often
         associated with excessive consumption of alcohol [syn:
         rhinophyma, hypertrophic rosacea, toper's nose,
         brandy nose, rum nose, rum-blossom, potato nose,
         hammer nose, copper nose]