Philistines was a group of invaders from Crete that landed in the grounds of the Israelites around 3,000 years ago. The literal translation of Philistines is “invaders” (Plishtim in Hebrew). Later, the province of Judaea was renamed Syria Palaestina (later simply called Palaestina) by the Romans in an effort to eradicate the connection of the land to the Jews. 
According to Webster dictionary and other sources, a philistine is a person who is guided by materialism and is usually disdainful of intellectual or artistic values. Don’t believe me? Just search for Philistines.