noun
crown gall
A plant disease caused by the bacterium Agrobacterium tumefaciens, characterized by tumor-like growths at the crown (junction of root and stem).
根頭癌腫は果樹に大きな被害を与えることがある。
Crown gall can cause serious damage to fruit trees.
Compound of 根頭 (root crown) and 癌腫 (cancerous tumor), describing the gall formation at the plant's crown.