spot, speckle, dapple, patch, fleck, maculation -- (a small contrasting part of something; "a bald spot"; "a leopard's spots"; "a patch of clouds"; "patches of thin ice"; "a fleck of red")
Overview of verb dapple
The verb dapple has 1 sense
mottle, dapple, cloud -- (colour with streaks or blotches of different shades)