Historical note here. First, it's spelled "chauvinism"; it was named for a Frenchman called Nicolas Chauvin, a fanatical follower of Napoleon, and up till the late 1960's always meant fanatical patriotism. The women's liberation movement adopted the word for the phrase "male chauvinism," and that meaning has driven the original out to the point that the word "male" is often dropped.

Words change. But I find it bothersome that the large majority of people aren't even aware that the word had a different meaning not so long ago, and aren't curious about where the word came from.