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Phrase(s): illuminate something with something
1. Lit. to light up something with something. • The lights illuminated the monument with a bright glow. • The monument was illuminated with mercury vapor lamps. 2. Fig. to clarify or elucidate something with explanation. • Please try to illuminate this matter with an explanation. • Could you illuminate your answer with a little more detail? 3. to decorate a manuscript with pictures or designs, as done in medieval monasteries. • The monks spent all their days illuminating manuscripts with pictures. • No one has the patience to illuminate books with tiny designs.
McGrawhill's American Idioms And Phrasal Verbs