I. ˈbläch transitive verb
Date: 1604
: to mark or mar with blotches
II. noun
Etymology: perhaps blend of blot (I) and botch (III)
Date: 1619
1. : imperfection , blemish
2. : a spot or mark (as of color or ink) especially when large or irregular
• blotch·i·ly ˈblä-chə-lē adverb
• blotchy ˈblä-chē adjective