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 C. edulis, the tubers of which are edible every month in the year.
© Webster 1913.