He was merely a cat's paw of a cunning man."- Here the idiom 'cat's paw' means -

• He was merely a cat's paw of a cunning man."- Here the idiom 'cat's paw' means - a person used by another as a toolCat’s pawEnglish Meaning: a person used by another as a tool / dupe.Bangla Meaning: কারো খেলার পুতুলEx. Sentence: He was merely a cat's paw of a cunning man.Bangla Meaning: সে একজন দুষ্টু লোকের নিছকই খেলার পুতুল ছিলো।Source: Website Lecture.