blotch Meaning, Definition & Usage

  1. noun an irregularly shaped spot
    splotch; splodge.
  2. verb mark with spots or blotches of different color or shades of color as if stained
    streak; mottle.

WordNet

Blotch noun
Etymology
Cf. OE. blacche in blacchepot blacking pot, akin to black, as bleach is akin to bleak. See Black, a., or cf. Blot a spot.
Definitions
  1. A blot or spot, as of color or of ink; especially a large or irregular spot. Also Fig.; as, a moral blotch.
    Spots and blotches . . . some red, others yellow. Harvey.
  2. (Med.) A large pustule, or a coarse eruption.
    Foul scurf and blotches him defile. Thomson.

Webster 1913