Pronunciation: (ī'spot"), [key]
1. a sensory organ of lower animals, having a light-perceiving function.
2. an eyelike spot, as on the tail of a peacock; eye.
3. Plant Pathol.a disease of plants, characterized by elliptical lesions on the leaves and stems, stunting of growth, and rotting, caused by any of several fungi.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.