In the fipple (mouthpiece) of flutes and recorders, the transverse cutout in the instrument's body is called the labium lip. Say WHAT??? Where'd that goofy term come from? It's also called a windsplitter. Which term leaves me wondering if I could play a recorder by passing gas, thereby simultaneously breaking and splitting wind?

Even so. The language is replete with redundancies. Consider the ATM Machine, or UPC Code, or SCUBA apparatus, for example. I suspect you could find better ones...

Labium lip is rather odd, though I suppose Hab is right. Fipple would have been a great bluffing game word.