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diamond-leaf laurel

American  
[dahy-muhnd-leef, dahy-uh-] / ˈdaɪ məndˌlif, ˈdaɪ ə- /

noun

  1. a tree, Pittosporum rhombifolium, of Australia, having coarsely toothed, oval or diamond-shaped leaves and white flowers, widely planted as an ornamental in the southwestern U.S.