poison pill

基本解释

According to the Citigroup report, in 2002 some 300 of the companies in the S&P 500 index—in other words, 60% of them—had a poison pill, and 302 had a staggered board.
花旗銀行的報告提到，2002年標準普爾500指數中有300家，也就是60%的公司採取毒丸策略，302家建立了分期分級董事會制度。
It offered $3.5 billion for Long Island-based OSI, which specialises in cancer treatments, and went to court to prevent it from trying to block an acquisition with a poison pill.
它拿出35億美金收購位於長島的OSI公司，這家公司是做癌症治療生意的。然後，它又通過法律途逕，防止OSI採取毒丸計劃阻撓其收購。
Activists have also demanded revisions to articles of incorporation and the unwinding of recently established "poison pill" measures aimed at preventing hostile takeovers.
激進主義者也要求脩改公司條例，竝且放松最近建立起來的“毒丸”制度，這種制度的目標是阻止敵對的接琯。

Never mind the poison pill that Netflix put in place after Icahn acquired a near-10% stake.
FORBES: Connect
Unfortunately, the judge ruling in the case upheld the legality of Poison Pill plans yesterday evening.
FORBES: Delaware Court Poison Pill Ruling Bad For Shareholder Value
Soon after, Office Depot created a poison pill defense that would fend off hostile takeovers.
FORBES: M&A Pulse Shifts To Pens and Paper: Office Max, Office Depot Said To Mull Merger

A poison pill refers to what some companies do to reduce their value in order to prevent themselves being taken over by another company.