請願人,訴願人,原告
Petitioner \Pe*ti"tion*er\, n. One who presents a petition.
petitioner
n 1: one praying humbly for something; "a suppliant for her
favors" [syn: {suppliant}, {supplicant}]
2: someone who petitions a court for redress of a grievance or
recovery of a right [syn: {suer}]