splotch
/splɔtʃ; splɑtʃ/ (Brit also splodge / splɔdʒ; splɑdʒ/) n dirty mark or spot (of ink, paint, etc); irregular patch (of colour, light, etc) （墨水、 颜料等的）斑, 斑点, 污斑; （颜色、 光等的）形状不规则的一片. splotch (Brit also splodge), v [Tn]
mark (sth) with splotches 使（某物）有污斑、 色斑或光斑.