One who attends a court as plaintiff, defendant, petitioner, appellant, witness, juror, or the like
A suitor is a company or organization that wants to buy another company. The company was making little progress in trying to find a suitor. a man who wants to marry a particular woman (secutor , from sequi )
One who sues or prosecutes a demand in court; a party to a suit, as a plaintiff, petitioner, etc