Sentence:  For although party's worn-out moulds have been shivered, and names which have <WSD>flashed</WSD> and thundered as the watchwords of unnumbered struggles for power are now fast waning into history, it is too much to hope, perhaps to desire, until the education of mankind shall more nearly approach its completion, that strong differences of opinion and feeling should cease to agitate the scenes on which freemen are called to discharge political duties. 
Meaning of the word marked with <WSD> tags:  To break forth like a sudden flood of light; to show a momentary brilliance.