Meaning of brown spot

brown' spot'

Pronunciation: [key]
— Plant Pathol. Plant Pathol.
  1. a disease of many plants, characterized by irregular, brownish lesions on the fruit and foliage and by stem cankers, caused by any of several fungi, as Ceratophorum setosum or Cephalosporium apii.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.