/kal"euh/ , n.
1. Also called calla lily, arum lily . any of several plants belonging to the genus Zantedeschia, of the arum family, esp. 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.
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