Sentence:  "<WSD>Dotard</WSD>," (said he) "let be thy deepe advise; / Seemes that through many yeares thy wits thee faile, / And that weake eld hath left thee nothing wise, / Else never should thy judgement be so frayle, / To measure manhood by the sword or mayle. 
Meaning of the word marked with <WSD> tags:  An old person with impaired intellect; one in his or her dotage.