tous-les-mois

n. [ F., all the months, i. e., every month. ] A kind of starch with very large, oval, flattened grains, often sold as arrowroot, and extensively used for adulterating cocoa. It is made from the rootstocks of a species of Canna, probably Canna edulis, the tubers of which are edible every month in the year. [ 1913 Webster ]