This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The person who institutes an appeal, or prosecutes another for a crime.

n. One who confesses a felony committed and accuses his accomplices.

n. In law: The person who institutes an appeal, or prosecutes another for crime.

n. One who confesses a felony, and turns king's or state's evidence against his associates.

n. One who challenges a jury.

"The appellor declined dereignment by battle, and so it was decided that the accused should be tried by the Middle Law, with eighteen compurgators."