what does the word locomotive mean

I've had a weight problem my life. My parents bought me "huskies" while I would definitely grammar school. I wasn't an incredibly active kid. My parents always provided 3 good meals for me daily. School lunches were actually nutritious back then. They weren't anything like they are now with pizza, tacos, hamburgers, hotdogs, chips, sweet sodas and all sorts of sorts of chips and desserts. I hear chips include the main course especially with school girls. Today's kids don't possess a chance. Air filter is blocked so there isn't enough air input. There is a downside to motorcycle sprocket, like idling air inlet congestion, then this air input isn't enough. The oil level of float chamber is simply too high, some gasoline go directly into the cylinder without atomization, which will cause incomplete combustion. Main orifice wearout seriously and then the fuel injection from primary nozzle increases, that can cause incomplete combustion. Heating automatic valve is start position along with the enrich valve is not closed automatically, that will caused a wealthy mixture. Carbon deposit in muffler, exhaust jam, waste gas stay in cylinder, that can caused incomplete combustion then black smoke.