Terms like "dawn raid", "poison pill", and "shark repellent" might seem like they belong in James Bond movies, but there's nothing fictional about them - they are part of the world of mergers and acquisitions (M&A). Owning stock in a company means you are part owner, and as we see more and more sector-wide consolidation, mergers and acquisitions are the resultant proceedings. So it is important to know what these terms mean for your holdings.