Source : Webster's Revised Unabridged Dictionary (1913)

Dizzard \Diz"zard\ (d[i^]z"z[~e]rd), n. [See {Dizzy}, and cf.
   {Disard}.]
   A blockhead. [Obs.] [Written also {dizard}, and {disard}.] --
   {Diz"zard*ly}, adv. [Obs.]