A Fundamentalist, as I see it, is one who adheres to the theology set forth in a series of books entitled The Fundamentals: A testimony to the Truth (Reuben Torrey and A. C. Dixon, eds., Los Angeles: Bible Institute, 1917). I don't normally give references to "wiki"-type resources, but Theopedia has a pretty good summary of the series, available here
Yes, I am familiar with "The Fundamentals". The theology put forth in it would be accepted by just about anyone who would call themselves an "evangelical" today. The two are synonymous yet you often see them referred to as separate theologies with the fundamentlist being painted as a snake handling, poison drinking cretin with only 3 teeth.