poison pill
noun /ˌpɔɪzn ˈpɪl/
/ˌpɔɪzn ˈpɪl/
(informal, business- a form of defence used by a company to prevent, or to reduce the effect of, a takeover that they do not want, for example by selling some of their important possessions
(公司为防止被兼并而采取的)自戕式防御;(出售某些重要财产以求最终自保的)掏空政策