Cute name. I wonder to what extent the language has anything to do with Frege's work in logic. I mean Haskell's last name was Curry, and currying is a big deal in FP. Thankfully that wasn't named after Moses Schoenfinkel.
In other words: higher order functions.
Disclaimer: I had the privilege of meeting Dr. Finkel here at university a few times before I stumbled across his name in Wikipedia and in the front of a book in the library. Totally not biased.
http://en.wikipedia.org/wiki/Curry%E2%80%93Howard_correspond...
See here, for example: http://books.google.de/books?id=OeAPiy-6L74C&pg=PA134&lpg=PA...