Culture (from the Latin cultura stemming from colere, meaning "to cultivate,")[1] generally refers to patterns of human activity and the symbolic structures that give such activities significance and importance. Cultures can be "understood as systems of symbols and meanings that even their creators contest, that lack fixed boundaries, that are constantly in flux, and that interact and compete with one another"[2] Different definitions of "culture" reflect different theoretical bases for understanding, or criteria for evaluating, human activity.
taken from: http://en.wikipedia.org/wiki/Culture