Any of the regulations governing the import and export of grain (called corn by the English) in Britain.
Records mention the imposition of Corn Laws as early as the 12th century. They became politically important in the late 18th and early 19th century, during the grain shortage caused by Britain's growing population, bad harvests, and the blockades imposed in the Napoleonic Wars. When Sir Robert Peel became prime minister the laws were finally repealed (1846). See also Anti-Corn Law League .