The Collaborative International Dictionary of English v.0.48:
Roquefort cheese \Roque`fort" cheese\, or Roquefort \Roque`fort"\, n. A highly flavored blue-molded cheese, made at Roquefort, department of Aveyron, France. It is made from milk of ewes, sometimes with cow's milk added, and is cured in caves. Improperly, a cheese made in imitation of it. [Webster 1913 Suppl.]WordNet (r) 3.0 (2006):
Roquefort n 1: French blue cheese