well if you look at the language involved...
BIcycle - 2 wheels
TRIcycle - 3 wheels
MOTORcycle - cycle with a motor, doesnt specify number of wheels
I think if you straddle it and its got handle bars instead of a steering wheel its a motorcycle. But you should specify 3-wheeled motorcycle when applicable.
Bars on a horse with a motorized circulation fan?
Motorcycle..haha
