Sentence:  ["]Then I slipped up again with a box of matches, <WSD>fired</WSD> my heap of paper and rubbish, put the chairs and bedding thereby, led the gas to the affair, by means of an india-rubber tube, and waving a farewell to the room left it for the last time." / "You <WSD>fired</WSD> the house!" exclaimed Kemp. / "<WSD>Fired</WSD> the house. It was the only way to cover my trail – and no doubt it was insured.["] 
Meaning of the word marked with <WSD> tags:  To set (something, often a building) on fire.