Focus on the pronunciation of dummy
English definition of “dummy”
/ˈdʌmi/ noun [C] (plural dummies) MARKETING
› a large model of a person, especially one used to show clothes in a store: If you want costumes or makeup to look really good, you can put it on a dummy.
› something made to look real, used especially to test people's reaction to it: The display case was filled with test packages and dummies to simulate the presence of food products.