splodge
From Longman Dictionary of Contemporary Englishsplodgesplodge /splɒdʒ $ splɑːdʒ/ noun [countable] British English informal MARKa large mark of mud, paint etc with an irregular shape SYN blotchsplodge of splodges of colour —splodgy adjectiveExamples from the Corpussplodge• They feature an unsavoury brown splodge with a white kerchief around its upper region.Origin splodge (1600-1700) Perhaps from spot + blot + botch