The Collaborative International Dictionary of English v.0.48:
Breadfruit \Bread"fruit`\, n. (Bot.)
1. The fruit of a tree (Artocarpus incisa) found in the
islands of the Pacific, esp. the South Sea islands. It is
of a roundish form, from four to six or seven inches in
diameter, and, when baked, somewhat resembles bread, and
is eaten as food, whence the name.
2. (Bot.) The tree itself, which is one of considerable size,
with large, lobed leaves. Cloth is made from the bark, and
the timber is used for many purposes. Called also
breadfruit tree and bread tree.