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tear-down
tear-down n.
Brit. 
/ˈtɛːdaʊn/
, /ˈtɛːdaʊn/U.S. /ˈtɛrˌdaʊn/
the complete dismantling of a piece of machinery./ˈtɛrˌdaʊn/ΚΠ
1976 Lebende Sprachen 21 152/2 After engine teardown exercise special care to replace damaged carbon rubbing type seals.
1981 Pop. Hot Rodding Feb. 51/1 Installing new pistons means removing the engine, an almost complete tear-down, and then a re-installation job.
tear-down
tear-down n.
Brit. /ˈtɛːdaʊn/
, /ˈtɛːdaʊn/U.S. /ˈtɛrˌdaʊn/
North American colloquial a house bought for the express purpose of demolishing it and building a larger one on the same plot; a purchase of this type./ˈtɛrˌdaʊn/ΚΠ
1990 Los Angeles May 8/1 The natives are complaining about its rapid Beverley Hills-ization as pushy refugees from the south scour the avocado-smothered hills for a $2 million tear-down.
1994 Chicago Tribune 21 July ii. 7/4 Since the mid-1980s, suburbs such as Hinsdale and Evanston have seen a rash of teardowns.
2005 Wall St. Jrnl. 21 Mar. (Central ed.) a2/4 Homes also are removed or lost..because of ‘tear downs’.
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