high mallow high·mal·low uncommon noun 1. erect or decumbent Old World perennial with axillary clusters of rosy-purple flowers; introduced in United States Synonymstall mallowhigh mallowcheesecheeseflowerMalva sylvestris Related words Broader terms mallow Parts Malva WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
