A unit of dry measure formerly used in England, equal to 4 quarters or about 32 bushels for grain and 36 bushels for coal.
An old unit of dry measure, now used in Great Britain only for measuring coal or coke and equal to 36 bushels.
Origin of chaldron
- Middle English from Old French chauderon augmentative of chaudiere kettle from Late Latin caldāria cauldron
From American Heritage Dictionary of the English Language, 5th Edition