0-6-0 what does this mean?

[Railphotog]

Front pilot truck - 0 (zero, no wheels)

Driving wheels - 6 (3 to a side)

Trailing truck - 0 (zero, no wheels)

Larger steamers such as 4-8-2 have four pilot wheels in front, 8 driving wheels, and 2 in the trailing truck.  Easy!

 

[Anonymous]

I know that this is a silly question, but I'm one of those silly few that don't know. I know that it is used to describe a locomotive but how? What exactly does this mean?

 

thanks Norman....