i found an actual definition of this on wikipedia.com...now we'll have an idea of what it is when folks mention it:
Neoconservatism, in its United States usage, has come to refer to the views of a subclass of conservatives who support a more assertive foreign policy coupled with one or more other facets of social conservatism. Historically, conservatives tend to be mildly isolationist. The "unipolar" assertions of columnist Charles Krauthammer are an example of neoconservatism. Neoconservatism evolved from a group of disaffected liberals, and thus Irving Kristol - usually credited (or blamed) as its intellectual progenitor - defined a "neoconservative" as "a liberal who was mugged by reality". Although originally regarded as an approach to domestic policy (the founding instrument of the movement, Kristol's The Public Interest periodical, did not even cover foreign affairs), through the influence of figures like Dick Cheney, Robert Kagan, Richard Perle, Kenneth Adelman and (Irving's son) Bill Kristol, it came to be more associated with the foreign policy aspects of President George W. Bush's administration. In fact, though, the Bush administration's domestic policy (variously termed "big government conservatism" or "compassionate conservatism") also bears many of the hallmarks of the neoconservative school of thought. Because the term "neoconservative" has become an epithet in some political discourse, it is often - and incorrectly - dismissed as a "buzzword" in other circles, and its actual meaning has become obscured. See also, The NeoCon Reader, edited by Irwin Stelzer, ISBN 0802141935; Neoconservatism: the Autobiography of an Idea, Irving Kristol, ISBN 0028740211; The Neoconservative Vision, Mark Gerson, ISBN 1568331002.