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1.
The smell of a freshly mowed lawn and the exhaust of the lawnmower doing said mowing.
"Hey i just walked by the freshly mowed football field and it smelled like grassoline"
by Dingleberry1888888888888888888 March 18, 2010
 
2.
An alternative fuel that is derived from the ethanol produced by the switchgrass plant. Because it is so easily grown, switchgrass is a likely candidate for reducing the need for fossil fuels.
After cutting the switchgrass with the lawnmower, the grass cuttings are converted to grassoline. The grassoline is then put into the lawnmower to cut the grass once more.
by fritz123 February 13, 2009