This hard-to-find game has developed a cult following among aficionados of grammar, semantics, and etymology. Think you've got a handle on the English language? Tired of crosswords and ready for a REAL challenge? Take the MooT test and give your vocabulary the workout of a lifetime. Here's a sample: What housing necessity's name comes from a Danish word that means "eye of the wind"? (Scroll down for the answer.)

Answer: the window. The word derives from the Danish vindauga, wind-eye.