Also found in: Thesaurus, Medical.
1. A spot or blot; a splotch.
2. A discoloration on the skin; a blemish.
3. Any of several plant diseases caused by fungi or bacteria and resulting in brown or black dead areas on leaves or fruit.
tr. & intr.v. blotched, blotch·ing, blotch·es
To mark or become marked with blotches.
marked with blotches