noun
: an abnormal condition of foliage characterized by a burned or scorched appearance of the tissues: as
a. : a nonparasitic disease of the apple and other fruits in which there is a marginal burning of the leaves
b. : a purplish red scorch of strawberry leaves caused by a fungus ( Diplocarpon earliana )
c. : a disease of the cherry caused by a fungus ( Gnomonia erythrostoma )