n. A truck and bus fuel made from discarded restaurant grease.

Example Citation:
"Biodiesel advocates say the grease-based fuel reduces emissions without affecting mileage or engine performance. And with 25 million gallons of leftover waste oils produced each year in the city, the supply is more than adequate."
—Jake Batsell, "Grease is the Word," Chicago Tribune, November 17, 1996

Earliest Citation:
And one industry source suggests that a biodiesel fuel made from a less expensive product, like grease, could be more viable.
—Caroline Humer, "Vegetable oils play role in alternative fuels industry," Chemical Marketing Reporter, April 6, 1992

Biodiesel can refer to any diesel fuel made from a natural product (such as soybeans).

Related Words: