Knockouts meaning : The act of making someone unconscious, or at least unable to come back on their feet within a certain period of time; a TKO. The deactivation of anything. Something wildly popular, entertaining, or funny. A very attractive person, especially a beautiful woman. A partially punched opening meant for optional later removal. The deactivation of a particular gene. A creature engineered with a particular gene deactivated. An event where a foreground color causes a background color not to print. A tournament in which a team or player must beat the opponent in order to progress to the next round. A simple game for two or more players, derived from basketball. A knockout auction.