from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A destructive disease of apple and pear trees, caused by a bacterium (Erwinia amylovora) that blackens the leaves and kills the branches.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. a bacterial plant disease that mainly affects apples, pears and some other members of the Rosaceae family

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

  • n. a disease blackening the leaves of pear and apple trees


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