mould noun definition in Materials and properties topic from the Oxford Advanced Learner's Dictionary

mould

 noun: Materials and properties topic
[countable] a container that you pour a liquid or soft substance into, which then becomes solid in the same shape as the container, for example when it is cooled or cooked A clay mould is used for casting bronze statues. Pour the chocolate into a heart-shaped mould. They broke the mould when they made you (= there is nobody like you).

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