In Yamaha motorcycle what does fjr stand for?

In bike model names most letters have a meaning, but some are simply the designation given to a particular model, rather than giving it a full name. F (usually at the beginning) means Four Cylinder. This was a letter adopted only by Yamaha, so an F as the first letter straight away means the bike is a Yammy! Honda also use F to denote four cylinders, such as VFR. Note placement of the F. J refers to the engine type and frame design used in that model. R (Used by many manufacturers) means the bike is a sports variant (stands for Race) So while an 1 year old FJR might be completely different to a 5 year old one, the engine and frame are based around the same design, so it is still an FJR! Many manufacturers name their bikes in this way. Some have given full names to certain models, such as the Fazer (FZR).