Definition of pug mill in US English:

pug mill


  • A machine for mixing and working clay and other materials into pug.

    See pug
    • ‘Because of the very low water content, RCC mixing is not as productive using a central mix plant - so a pug mill is often used, a very high-energy mixing device.’
    • ‘The clay is ‘weathered’ before it is mixed with sand and water and passed through a pug mill, to acquire a smooth consistency.’