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Definition of Java plum in US English:
Java plum
noun
The South Asian tree Syzygium cumini (family Myrtaceae), cultivated for its fruit and as a shade tree; (also) the edible, dark crimson fruit produced by this tree; also called jambo, jambolan.
Origin
Early 19th century; earliest use found in John Loudon (1783–1843), landscape gardener and horticultural writer.
