What Does It Mean?

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From our dictionary:
phil•is•tine

(fil'u-stēn", -stīn", fi-lis'tin, -tēn),
n.
1. (sometimes cap.) a person who is lacking in or hostile or smugly indifferent to cultural values, intellectual pursuits, aesthetic refinement, etc., or is contentedly commonplace in ideas and tastes.
2. (cap.) a native or inhabitant of ancient Philistia.

adj.—
1. (sometimes cap.) lacking in or hostile to culture.
2. smugly commonplace or conventional.
3. (cap.) of or belonging to the ancient Philistines.