chaldron(n = noun.quantity) - a British imperial capacity measure (liquid or dry) equal to 36 bushels;
is a kind of british capacity unit, imperial capacity unit

   An English dry measure, being, at London, 36 bushels heaped up, or its equivalent weight, and more than twice as much at Newcastle. Now used exclusively for coal and coke. [1913 Webster]
" In the United States the chaldron is ordinarily 2,940 lbs, but at New York it is 2,500 lbs." De Colange. [1913 Webster]