monowheel
Unicycle. Where do they call them "monowheels?" I'm seriously asking, I'm curious. In a resent Yogscast video, Lewis was talking what I thought was normally, then Simon suddenly chimes in "Isn't it pronounced lass-oo, not lass-o?" I just stared at the screen for a moment like "Wait, they pronounce that differently?" And then he started making fun of our pronounciation by saying it correctly... and saying some others really wrong.
Point being, I want to know more common, different names for things.