I am currently trying to organize how my whistle reviews will be set up for my website (a much large headache than I had anticipated 
), and I have run into the issue of whistle termanology. Is there any kind of consensus as to what certain parts of the whistle are called? The “head” of a whistle is generally reffering to the “mouth piece” but does the mouth piece encompass the entire head or just the part you put in your mouth? The “wind way” is pretty straight forward, but just what part does the word “fipple” encompass? I’ve also heard the phrase “fipple edge” and “labium” (although this seems a little too sexually conatated). Also the word “ramp” has been tossed around. I seem to remember seeing a whistle diagram at some point but I can’t find it now. Do any of the common tin whistle tutors have any “this is a whistle” diagrams or descriptions? Thanks!
There is a diagram over at www.tinwhistles.us You will need to click around in there to find it. Has some books and great whistles for sale too.
Daniel makes the largest low whistles around.
I found Daniel’s diagram!
http://www.tinwhistles.us/jubilee/fipterm.htm
The terminology is apparently flexible:
http://www.answers.com/topic/fipple
Technically “fipple” refers to the block or plug. Hence the German Blockflöte (block flute = fipple flute) for recorder.
But in my usage, the fipple comprises the elements that in combination create the driving vibration: the windway or duct, the window, and the blade/ramp/labium. The block forms the floor or bottom of the windway, and the beak the roof or top of the windway. The windway has an entrance and an exit. The windway, beak and block together form the mouthpiece where you place your mouth. And all the above taken together constitute the fipple. The part of the whistle containing the fipple is the head. If it’s a separable part, then it’s a head joint.
Sometimes I’ll say mouthpiece instead of head, especially for Generation type whistles, and beak instead of mouthpiece. But that seems less precise. And there’s nothing wrong with labium. 
It just means lip. I tend to think of it as the edge of the blade, not the whole thing, but that’s probably too precise. Of course, there are lots of design variations. Gens don’t have a discrete block, Burke blocks include the windway, etc.
Whew … does that help or hurt?
There we go. Whistle anatomy 101 from the truants in the back row.
Seems that all the bits have proper names as defined by rc**dr makers over the years.
With whistles, however, it’s like ITM, you have to know what all the bits do, then you have to learn how to apply embellishment and variation.
I love it!
Hey, where’s my goat?? I pulled off the pointy blue thingy part and looked inside the tube with holes … and there ain’t no goat there. Not even something that looks like a dog but might be a goat. I want a refund!!!
Ah the goat?
Essential stuff - it’s something that’s added by the player and can’t be found in a rc**dr - I’m told it’s invisible. As you can see from the diagram, I’m just a nOOb and my goat is still a bit doggy 
I had a look at some rc**dr diagrams and noticed that there’s one thing rXcXXdXrs have that you won’t find in a whistle - it’s called the “candle”. Which goes to prove that whistlers are not afraid of the dark.