Arisarum vulgare ari·sa·rum·vulgare uncommon noun 1. tuberous perennial having a cowl-shaped maroon or violet-black spathe; Mediterranean; Canaries; Azores Synonymsfriar's-cowlArisarum vulgare Related words Broader terms arum Parts Arisarum WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.