\Sign"ior*ize\, v. t. [See {Seigniorize}.]
To exercise dominion over; to lord it over. [Obs.] --Shelton.

\Sign"ior*ize\ (s[=e]n"y[~e]r*[imac]z), v. i.
To exercise dominion; to seigniorize. [Obs.] --Hewyt.