Definitions for "Golden Share"
A share with special voting rights that give it peculiar power vis-à-vis other share. The term applies particularly to share retained by a government after privatisation. If a government wishes to sell off a company in a sensitive industry (e.g. defense) and yet retain control, it can hold on to a golden share. This might give it the right to veto any takeover bid.
Share with unusual rights, often allowing exiting/ minority shareholders disproportionate control or rights to future capital proceeds.
a share of stock with special rights which is retained by the government after privatization