pentimentonoun [ C ]
/ˌpen.tɪˈmen.təʊ//-t̬ɪˈmen.toʊ/plural pentimenti /-ti/specializeda mark left by an earlier painting that shows where an artist made changes:
In Rembrandt's "Still Life With Dead Peacocks", when you look the pentimento of previous attempts can be seen at just the right angle.