noun 1.Also called calla lily, arum lily. any of several plants belonging to the genus
Zantedeschia, of the arum family, especially
Z. aethiopica, having arrow-shaped leaves and a large white spathe enclosing a yellow spike.
2.a related plant, Calla palustris, of cold marshes of Europe and North America, having heart-shaped leaves.
Origin:
< Neo-Latin (Linnaeus)