mottle UK /ˈmɒt.əl/US /ˈmɑ.təl/noun 3verb 1forms 3 noun3 •A distinguishing blotch of colour. •A mottled or spotted pattern.The most common symptom is a mild mottle on the youngest leaves of infected plants. •Any of several species of genus Logania of butterflies, found from Burma to the Philippines and New Guinea. verb1 •To mark with blotches of different color, or shades of color, as if stained; to spot; to maculate.Between the grey mist of rainclouds the sun suddenly appeared to mottle the wet asphalt of Marble Arch in patches of silver and ebony. — 1936 formsmottled · mottling · mottles