[toss1]

Yes, that is a good definition of a coup. Notice that it does not require bloodshed or boots on the ground.

In a self-determining society or democracy all institutions are largely independent; this includes both the institutions of government such as the Executive, Judiciary, and Legislature, as well as the institutions of civil society including the press, academia, industry, education, religion sport, etc. In an autocracy, these institutions are bent to the will of the executive.

When a group in a democracy takes actions to corrupt or co-opt the independence of the institutions, it doesn't matter whether or not violence is involved; it is legitimately a coup, especially as far as practical results are concerned for those newly under autocratic rule.

You are quibbling about dictionary minutiae and ignoring the very real threat posed to OP, and his request for help.