noun
: a disease of blackberries caused by a gall mite ( Aceria essigi syn. Eriophyes essigi ) that feeds on the young fruit and causes it to become hard and bright red
noun
: a disease of blackberries caused by a gall mite ( Aceria essigi syn. Eriophyes essigi ) that feeds on the young fruit and causes it to become hard and bright red
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012