- 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. 2018
Examples from the Web for 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).