Either of two evergreen trees of Australia, Bursaria spinosa (family Pittosporaceae), which bears clusters of fragrant white flowers, and Eucalyptus albens (family Myrtaceae), which has glaucous leaves.
Origin
Mid 19th century.
Definition of white box in US English:
white box
noun
Australian
Either of two evergreen trees of Australia, Bursaria spinosa (family Pittosporaceae), which bears clusters of fragrant white flowers, and Eucalyptus albens (family Myrtaceae), which has glaucous leaves.