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British Dictionary definitions for blue mould

blue mould

noun
  1. Also called: green mould any fungus of the genus Penicillium that forms a bluish mass on decaying food, leather, etc
  2. any fungal disease of fruit trees characterized by necrosis and a bluish growth on the affected tissue: mostly caused by Penicillium species
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Examples from the Web for blue mould

Historical Examples

  • They kept him in a dark place, like a cheese, until he had the full Tellson flavour and blue-mould upon him.

    A Tale of Two Cities

    Charles Dickens