MOTTLE
mottle
(noun) an irregular arrangement of patches of color; “it was not dull grey as distance had suggested, but a mottle of khaki and black and olive-green”
mottle, dapple, cloud
(verb) colour with streaks or blotches of different shades
mottle, streak, blotch
(verb) mark with spots or blotches of different color or shades of color as if stained
Source: WordNet® 3.1
Etymology
Verb
mottle (third-person singular simple present mottles, present participle mottling, simple past and past participle mottled)
To mark with blotches of different color, or shades of color, as if stained; to spot; to maculate.
Noun
mottle (plural mottles)
A distinguishing blotch of color.
A mottled coloration or pattern.
The most common symptom is a mild mottle on the youngest leaves of infected plants.
Source: Wiktionary
Mot"tle, v. t. [imp. & p. p. Mottled; p. pr. & vb. n. Mottling.]
Etym: [From Mottled.]
Definition: To mark with spots of different color, or shades of color, as
if stained; to spot; to maculate.
Mot"tle, n.
Definition: A mottled appearance.
Source: Webster’s Unabridged Dictionary 1913 Edition