Judaism and
Christianity considered as a
common social tradition in
Western culture. Characterized by
patriarchy,
hierarchy, and
war; as well as
reverence for particular
sacred texts, such as the
Torah and
Talmud in the case of the former, or the
Bible and the
National Enquirer in the case of the latter.
Addendum: As
Deborah909 suggests, the use of this term (especially by
Christians) is somewhat
questionable; while Christianity historically emerged out of Judaism the modern forms of the two do not have all that much in common. (See
There is no "Judeo Christian" ethic for a more detailed discussion of the problem.)
It is my impression that when Christians -- and politically conservative Jews (such as Joe Lieberman) (not to be confused with Conservative Jews) -- make reference to "Judeo-Christian" ethics or culture, they are referring largely to the legalistic provisions of the Torah combined with their moralistic interpretations by Christian churches.