noun
1. or umbrella magnolia : an American magnolia ( Magnolia tripetala ) having large leaves clustered at the ends of the branches
2.
a. : an Australian tree ( Brassaia actinophylla ) of the family Araliaceae having digitate leaves arranged like the ribs of an umbrella
b. : umbrella bush
3. : any of various other trees or shrubs resembling an umbrella especially in the arrangement of leaves or the shape of the crown of foliage: as
a. : blue dogwood
b. : portia tree
c. : malabar almond 1
d. : a cultivated tree of the southern United States that forms a variety ( Melia azedarach umbraculiformis ) of the chinaberry and is characterized by branches arising at a common level and radiating from the trunk like the ribs of an umbrella