rose apple

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A tropical evergreen tree (Syzygium jambos) of Southeast Asia, widely cultivated for its showy white flowers and fragrant yellowish fruits, used to make jellies and confections.
• noun The fruit of this plant.

from The Century Dictionary.

• noun An East Indian tree, Eugenia Jambos, widely cultivated in the tropics, beautiful in flower, foliage, and fruit.
• In Australia, the sweet plum, Rancooria cerasifera. See Owenia, 1.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun tropical tree of the East Indies cultivated for its edible fruit
• noun fragrant oval yellowish tropical fruit used in jellies and confections