“Everyone except an economist knows what ‘money’ means, and even an economist can describe it in at the course of a chapter or so…” ~ A.H. Quiggin
Best chased (in my opinion) with a little eurodollar crash course (like this) Money, The Unauthorised Biography is one of the better efforts in the genre of “attempting to define and explain what money really is (hint, it’s both more and less complicated than you think, but why not read the book and let me know your definition here).
Whatever it is, money makes the world go around – you may as well learn how it works (and how it doesn’t).