DCHP-1 Online
back-firing † 
n. the practice or process of setting backfires; also, an instance of this practice.
- 1909 (1965) one of our party has just gone to a point of vantage and on his report we shall consider the wisdom of back-firing. . . . A fine method to make flame devour flame.
- 1955 (1959) There was still some equipment to come, including the pumps, gas and oil, and kerosene for back-firing.
- 1909 (1965) one of our party has just gone to a point of vantage and on his report we shall consider the wisdom of back-firing. . . . A fine method to make flame devour flame.