noun
: any of several diseases of the apple tree that produce cankers (as bark canker, bitter rot, black rot, blister canker, European canker, fire blight, or perennial canker)
noun
: any of several diseases of the apple tree that produce cankers (as bark canker, bitter rot, black rot, blister canker, European canker, fire blight, or perennial canker)
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012