‖ A shortened form of Accademia della Crusca, an academy in Florence, Italy, founded in the 16th century, especially for conserving the purity of the Italian language. [ 1913 Webster ]

☞ The Accademia della Crusca (literally, academy of the bran or chaff) was so called in allusion to its chief object of bolting or purifying the national language. [ 1913 Webster ]