teardownPronunciation: /ˈtɛːdaʊn/Definition of teardown noun US informal an act of completely dismantling something:an engine teardown a house in good repair bought for the express purpose of demolishing it and building a larger one on the same plot:a $2 million teardown an act of demolishing a teardown house:every teardown has an impact on the look and feel of a communityteardown in other Oxford dictionaries Definition of teardown in the US English dictionary