Sentence:  [...] the Duke of Dorset charged in the list with "not known, but supposed "forty thousand per year"" (charitable supposition) had when formerly in office only about 3 or £4,000, and "has not now, nor when the black list was printed, any office whatever --" (Much tumult, and cries of "shame" and "<WSD>doust</WSD> the liars") 
Meaning of the word marked with <WSD> tags:  To extinguish, to destroy, to kill.