crown gall

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noun Plant Pathology.

a disease of peaches, apples, roses, grapes, etc., characterized by the formation of galls on the roots or stems usually at or below ground level, caused by a bacterium, Agrobacterium tumefaciens.
the gall itself.

Origin of crown gall

First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for crown gall

Historical Examples of crown gall

  • The raspberry is a common carrier of crown-gall and should not be planted as an inter-crop in a peach-orchard.

  • In common with all tree-fruits, the peach is attacked by crown-gall (Bacterium tumefaciens Smith and Townsend).